Hydration

Add a touch of Teravail to your ride with these bottles. - BPA-free plastic - 100% FDA food-grade materials - Non-solvent base (UV cured) CPSC-approved ink - Volume: 22 oz

Insulated drink belt that holds 1 liter of liquid and keeps it from freezing or keeps it warm. Zipper compartment on top to store food and media. Two color webbing with clip at waist. Volume: 1 liter.

The Surly Born to Lose Water Bottle offers premium real estate for your refreshment of choice. Shielded from unwanted odors, flavors, mold, and stains, your water won’t taste like whatever else you put in there last time. Available in 22 oz. and 26 oz. sizes

Keep yourself hydrated during your next interplanetary excursion with our Intergalactic Water Bottle. Available in 22 oz. and 26 oz. sizes, it'll store your liquids while resisting stains, odors, and mold.

The Surly Monster Squad Water Bottle offers 22 oz. of premium real estate for your refreshment of choice. Shielded from unwanted odors, flavors, mold, and stains, your water won’t taste like whatever else you put in there last time.

Sunlite's Alloy Cage comes in a rainbow of colors to match your bike. It's light, holds fast and looks great.

Sunlite's Handlebar Mount Bottle Cage lets you attach a water bottle to your handlebars for easy access. Its lightweight design is good for road and mountain use.

The Pro Side Cage is an aluminum side-pull bottle cage designed for easy access to bottles with small frames and full suspension bikes while maintaining secure clamping. - Fits 74mm bottles - Bolts included - Weight: 46g

Planet Bike's Sideload Cage is perfect for smaller frames and compact geometry. This cold-forged aluminum cage loads from the right on downtubes and the left on seat tubes. And, it's only 41 grams!

Sometimes you don't want to leave your cup of joe at home. Enter: Portland Design Works' Bar-ista to keep your morning beverage within easy reach. This handy accessory fits most travel mugs and attaches to 26.0mm handlebars. Drop in your travel mug (with a good lid to avoid splash stains) and enjoy the ride. - Constructed of 5052 alloy and lined with rubber to better grip travel mugs - Weight: 71g (2.5 ounces) - Dimensions: 8cm (3.125") diameter at top, tapering to 7.5cm (2.95") at bottom - Lifetime PDWarranty

The Portland Design Works Owl Cage is made from a single sheet of lightweight 5052 alloy. Cut in the shape of a Great Horned Owl, its wings fold in to securely cradle your water bottle. Get an Owl and make your ride fly. - Constructed of 5052 alloy - Weight: 67 g (2.3 oz) - Includes two stainless bolts for installation - Lifetime PDWarranty

The Portland Design Works Sparrow Cage is made from a single sheet of lightweight 5052 alloy. The Sparrow's wings fold in to securely cradle your water bottle and the cut outs help keep the cage light. Get a Sparrow and make your ride fly. - Constructed of 5052 alloy - Includes two stainless bolts for installation  - Weight: 57g (2oz) - Lifetime PDWarranty

Osprey's Hydraulics LT 1.5L Lumbar Reservoir by Hydrapak is made for those who prefer an off-the-shoulder hydration solution. Designed to fit in most lumbar packs, but perfectly pairs as an extra or replacement reservoir for Osprey's Seral lumbar mountain biking pack. Twin-welded chevron baffles stabilize the water and maintain a flat profile. Thoughtful design makes filling, cleaning, and—most importantly—staying hydrated on the trail easier than ever. All parts are BPA-free, phthalate-free, lead-free, guaranteed. All materials are certified food safe according to FDA and EU regulations. - Twin-welded chevron baffles stabilize the water and maintain a flat profile - Easy Slide-Seal top opening, seals watertight and provides wide access for easy filling and cleaning - Magnet clip attaches to the reservoir hose and pairs with the included sternum strap magnet for easy water access and hose management - Hydrapak Blaster bite valve offers fast, smooth water flow with a 1/4 twist on/off switch

Osprey’s Hydraulics Bite Valve provides a high-quality replacement for your old, neglected and beat up bite valve. The bombproof ¼ twist shut-off design guarantees you won’t experience any unpleasant leaks.

The Bite Valve Cover keeps your reservoir bite valve free from dirt and dust on the trail.

When it’s time to replace the hose on your existing hydration system, Osprey’s Hydraulics Reservoir Hose is the answer. Made of high-quality quarter inch tubing for dependable performance and featuring a high flow rate, it will bring new life to your hydration system. All parts are BPA-free, phthalate-free, lead-free, guaranteed. All materials are certified food safe according to FDA and EU regulations.

Replacing old bite valve sheaths helps maintain a sanitary hydration system. Osprey’s Bite Valve Sheaths provide a soft surface for your chompers to sink into when you’re hydrating on the fly. Also perfect for those who can’t help but chew through the bite valve like their old #2 pencils in high school.

Ideal for fast rides that require only the water on your back, the Katari 1.5 lets you carry the bare minimum. The high-quality, low-profile design features an included 1.5-liter reservoir that slides into its own exterior pocket with a bite valve that attaches magnetically to a sternum strap. A well-ventilated mesh harness offers exceptional airflow and rolled, soft-edge shoulders provide contoured comfort and stability. In the event you find yourself outside when the sun goes down, a loop for your rear tail light lets you be seen. Made with mountain bikers in mind, but practical for any activity where hydration is a must. LOW-PROFILE CARRY - When carrying water and a few essentials are all that's needed, the Katari/Kitsuma provides a lightweight option that rides close to your back for stability on any trail. RESERVOIR INCLUDED - An Osprey Hydraulics LT 1.5L or 2.5L reservoir keeps you hydrated all day long and stores in an external hydration compartment to protect pack contents from accidental spills. RIDE STABILITY - Our rolled, soft-edged harness contours to the upper shoulders to keep the pack close to your body and provide stability. AIRSCAPE SUSPENSION - Atilon foam framesheet allows dynamic body movement and distributes load across entire backpanel AIRSCAPE BACKPANEL - Ridged airmesh-covered foam with center air channel for excellent ventilation BIOSTRETCH HARNESS - Lightweight, ridged airmesh harness provides ventilated comfort - Rolled, soft-edged harness designed to contour the shoulder providing comfort and stability - Low-profile design with AirScape backpanel and rolled, soft-edged harness for maximum comfort - Dedicated hydration compartment with included Osprey Hydraulics LT 1.5L reservoir by Hydrapak - Magnetic sternum-strap bite-valve attachment - Zippered, scratch-free heat-embossed slash pocket - Loop for blinky-light attachment (light not included)

When you want to carry water on your back—and almost nothing else—the Katari 3 has you covered. Low profile but high quality, you'll reach for this pack before your next quick pedal (or ski, or hike) and hardly notice it's there. An airmesh-covered backpanel and rolled soft-edge shoulders deliver excellent ventilation, comfort, and stability, while allowing for full range of motion. A dedicated external sleeve holds an included 2.5-liter reservoir and stretch-mesh side pockets let you grab bars, gloves, and other small essentials on the go. Clip your tail light on the bottom loop to quell any concerns about making it out of the trail before the sun makes its way to the horizon. LOW-PROFILE CARRY - When carrying water and a few essentials are all that's needed, the Katari/Kitsuma provides a lightweight option that rides close to your back for stability on any trail. RESERVOIR INCLUDED - An Osprey Hydraulics LT 1.5L or 2.5L reservoir keeps you hydrated all day long and stores in an external hydration compartment to protect pack contents from accidental spills. RIDE STABILITY - Our rolled, soft-edged harness contours to the upper shoulders to keep the pack close to your body and provide stability. AIRSCAPE SUSPENSION - Atilon foam framesheet allows dynamic body movement and distributes load across entire backpanel AIRSCAPE BACKPANEL - Ridged airmesh-covered foam with center air channel for excellent ventilation BIOSTRETCH HARNESS - Lightweight, ridged airmesh harness provides ventilated comfort - Rolled, soft-edged harness designed to contour the shoulder providing comfort and stability - Low-profile design with AirScape backpanel and rolled, soft-edged harness for maximum comfort - Dedicated hydration compartment with included Osprey Hydraulics LT 2.5L reservoir by Hydrapak - Magnetic sternum-strap bite-valve attachment - Zippered, scratch-free heat-embossed slash pocket - Loop for blinky-light attachment (light not included) - Dual-stretch-mesh side pockets

Sometimes the water on your back is the only thing you need, especially when you're planning on riding a fast and familiar route. The Kitsuma 1.5 is the ideal pack for women who want just that. Designed with the mountain biking minimalist in mind (but suitable for many activities), an included 1.5-liter reservoir in its own dedicated sleeve keeps you hydrated on the trail. Unassuming shoulder straps with rolled edges provide a comfortably soft and stable women's-specific fit. Lightweight mesh-covered foam delivers admirable airflow, while permitting maximum body movement. A loop for your tail light at the bottom of the pack keeps you visible to others when the light begins to fade. LOW-PROFILE CARRY - When carrying water and a few essentials are all that's needed, the Katari/Kitsuma provides a lightweight option that rides close to your back for stability on any trail. RESERVOIR INCLUDED - An Osprey Hydraulics LT 1.5L or 2.5L reservoir keeps you hydrated all day long and stores in an external hydration compartment to protect pack contents from accidental spills. RIDE STABILITY - Our rolled, soft-edged harness contours to the upper shoulders to keep the pack close to your body and provide stability. AIRSCAPE SUSPENSION - Atilon foam framesheet allows dynamic body movement and distributes load across entire backpanel AIRSCAPE BACKPANEL - Ridged airmesh-covered foam with center air channel for excellent ventilation BIOSTRETCH HARNESS - Lightweight, ridged airmesh harness provides ventilated comfort - Rolled, soft-edged harness designed to contour the shoulder providing comfort and stability - Women's-specific fit and sizing - Low-profile design with AirScape backpanel and rolled, soft-edged harness for maximum comfort - Dedicated hydration compartment with included Osprey Hydraulics LT 1.5L reservoir by Hydrapak - Magnetic sternum-strap bite-valve attachment - Zippered, scratch-free heat-embossed slash pocket - Loop for blinky-light attachment (light not included)

Not every ride calls for a big pack and lots of gear. When you're looking to get in a quick ride that requires water and not much else, the women's-specific Kitsuma 3 is a quality and functional inconspicuous solution to your hydration needs. Low-profile shoulder straps give way to rolled-soft edges that offer excellent fit and stability. Stay cool and dry, even on hot and steamy days, with a lightweight AirScape airmesh backpanel that also grants full body movement. An independent hydration sleeve holds an included 2.5-liter reservoir with a bite valve that attaches to your sternum strap via magnet. Store small easy-access items, like energy bars and arm warmers, in the side mesh pockets and attach a rear bike light on the designated loop should you pedal close to sunset. LOW-PROFILE CARRY - When carrying water and a few essentials are all that's needed, the Katari/Kitsuma provides a lightweight option that rides close to your back for stability on any trail. RESERVOIR INCLUDED - An Osprey Hydraulics LT 1.5L or 2.5L reservoir keeps you hydrated all day long and stores in an external hydration compartment to protect pack contents from accidental spills. RIDE STABILITY - Our rolled, soft-edged harness contours to the upper shoulders to keep the pack close to your body and provide stability. AIRSCAPE SUSPENSION - Atilon foam framesheet allows dynamic body movement and distributes load across entire backpanel AIRSCAPE BACKPANEL - Ridged airmesh-covered foam with center air channel for excellent ventilation BIOSTRETCH HARNESS - Lightweight, ridged airmesh harness provides ventilated comfort - Rolled, soft-edged harness designed to contour the shoulder providing comfort and stability - Women's-specific fit and sizing - Low-profile design with AirScape backpanel and rolled, soft-edged harness for maximum comfort - Dedicated hydration compartment with included Osprey Hydraulics LT 2.5L reservoir by Hydrapak - Magnetic sternum-strap bite-valve attachment - Zippered, scratch-free heat-embossed slash pocket - Loop for blinky-light attachment (light not included) - Dual-stretch-mesh side pockets

When you're out for an all-day ride—or when your ride unexpectedly turns into an all-dayer—you need a pack that carries everything without weighing you down. The women's-specific Raven 10 is stable, comfortable, and specifically designed with mountain bike challenges in mind. You want a pack that doesn't bounce all over the place, and so do we. So, we made one. The shoulder straps on this pack are shaped like wings and naturally curve when you resume your natural riding position. An AirScape suspension system and backpanel keep your bag close to your body while allowing for dynamic body movement and unmatched comfort and ventilation. An integrated 2.5-liter reservoir keeps you hydrated, and a dedicated compartment at the bottom of the pack holds a Tool Roll that conveniently stores everything from mini-pumps to tire levers and more. TOOL ROLL - Never dig for your tools again. The dedicated lower compartment holds a removable pouch to organize your tools so you can get back to what matters—the ride. RESERVOIR INCLUDED - Osprey Hydraulics LT 2.5L reservoir keeps you hydrated all day long and stores in a dedicated hydration compartment with direct-zip access and sternum strap magnetic bite valve. LIDLOCK - Attach your helmet securely to the outside of your pack without wasting the space inside. Perfect for wrapping up a long ride at your local brewery. RIDE STABILITY - Our new "winged" harness wraps the upper shoulders for added stability and keeps the pack comfortably close to your body. FEATURES - Women's-specific fit and sizing - Countouring AirScape backpanel and bike-specific shape harness - Included Osprey Hydraulics LT 2.5L reservoir by Hydrapak - Hydration sleeve with direct-zip access and hose path for easy loading - Lightweight sternum strap magnet for easy access to water - Scratch-free, heat-embossed zippered slash pocket - Stretch mesh zippered hipbelt pockets - LidLock bike helmet attachment - Stretch mesh front pocket for quickly stashing extra gear - Blinker light attachment and reflective patch for safety - Removable roll-up tool pouch keeps tools handy and organized Bike tool organization in main compartment AIRSCAPE SUSPENSION - Atilon foam framesheet allows dynamic body movement and distributes load across entire backpanel AIRSCAPE BACKPANEL - Mesh-covered, extra deep ridged foam allows maximum ventilation while keeping the load close to the body BIOSTRETCH HARNESS - Osprey engineered bike-specific harness with winged shoulder strap shape contours the shoulder providing superior comfort and stability - Soft breathable spacermesh contact surfaces and die-cut foam ventilation HIPBELT - Airmesh wrap hipbelt with zippered pockets provide stability and breathability

Prefer an off-the-back hydration solution instead of an over-the-shoulder pack? The Seral 7 lumbar pack was made for you. Featuring an included 1.5-liter lumbar reservoir and magnetic bite valve that attaches to the hipbelt for easy access. Some lumbar packs have a tendency to creep around while you ride, we promise this one won't. Compression straps pull the pack into your lower back and wrap around your hips for supreme stability, even over technical terrain. A zippered main compartment and hipbelt pockets fit your spare tube, patch kit, CO2 inflator and more. Lumbar Carry For riders who require hydration or gear storage while riding, but prefer the off-the-back carry and minimalism provided by lumbar packs. Ride Stability Our bike-specific, angled hipbelt and compression straps provide stability and comfort by keeping the pack close to your body. This is created by a breathable airmesh wrap hipbelt that contours over the hipbone, Osprey's ErgoPull cross-body waist strap closure system that pulls the pack into the lumbar and side compression straps that pull the load close to your body, providing the most comfortable, secure and stable carry. Included Reservoir A dedicated hydration compartment stores an included 1.5L lumbar reservoir for short to medium rides and compresses for stable carry, while the hose magnet attaches to the bite valve for easy access while riding. Sustainable Materials Constructed with PFC-free recycled bluesign-approved nylon; a sustainable build that's tough and durable to endure years of riding. - AirScape backpanel with contouring lumbar wrap provides maximum stability - Included Osprey Hydraulics 1.5 L lumbar reservoir by Hydrapak - Magnetic hipbelt bite valve attachment - Large zippered main compartment with reservoir sleeve - Easily accessible zippered front pocket with internal tool organization - Dual zippered hipbelt pockets - Blinker light attachment with reflective graphic - Extra-thick ridged foam with center air channel for excellent ventilation - Airmesh wrap hipbelt with zippered fabric pockets provide stability and breathability - ErgoPull waist strap closure system allows for proper snug and stable fit

This highly ventilated and lightweight women's-specific pack is just the right size for carrying everything you need for an all-day ride. A BioStretch harness offers superior stability in the form of winged shoulder straps that curve just as you do when you're reaching for your handlebars. When things get steamy, a breathable 3D AirSpeed tensioned mesh backpanel means you'll feel the wind coming down your back. Front and side pockets make organizing smaller items easy, a LidLock attachment point secures your helmet to your pack, and a removable raincover keeps everything dry should the skies open up on you. AIRSPEED VENTILATION - Tensioned backpanel reduces sweating, and the LightWire frame takes the weight off your shoulders and transfers it to your hips to provide stable, comfortable, and ventilated carry. INTEGRATED RAINCOVER - A little weather shouldn't stop anyone from riding. The integrated high-visibility raincover keeps your pack and gear dry on your ride from start to finish. RIDE STABILITY - Our new "winged" harness wraps the upper shoulders for added stability and keeps the pack comfortably close to your body. FEATURES - Women's-specific fit and sizing - Maximum ventilation with AirSpeed backpanel and bike-specific shaped harness - Dedicated hydration compartment with included Osprey Hydraulics LT 2.5L reservoir by Hydrapak - Front stretch mesh pocket - Scratch-free, heat-embossed zippered slash pocket - LidLock helmet carry - Blinker light attachment - Integrated removable high-visibility raincover - Magnetic sternum strap for quick access to reservoir bite valve - Zippered tool organization pocket - Dual stretch mesh side pockets - Dual upper and lower side compresion straps - Padded spacermesh hipwings with webbing ErgoPull waist strap provides comfort and stability AIRSPEED SUSPENSION - Peripheral LightWire frame creates a platform for a contoured tensioned mesh backpanel AIRSPEED BACKPANEL - 3D-tensioned breathable mesh backpanel provides extreme ventilation with a comfortable fit BIOSTRETCH HARNESS - Osprey engineered bike-specific harness with winged shoulder strap shape contours the shoulder providing superior comfort and stability - Soft breathable spacermesh contact surfaces and die-cut foam ventilation

If you like carrying your hydration on your back, but not much else, the women's-specific Sylva 5 is your pack. An included 2.5-liter reservoir keeps you from going thirsty and a separate main compartment lets you bring along the essentials. Perfect for pedaling in hot and humid climates, a "trampoline-style" AirSpeed backpanel creates a comfortable fit and a breeze at your back. The BioStretch harness offers superior stability with wing-shaped shoulder straps that mimic the natural arc you assume when you're in a riding position. An integrated removable raincover keeps your stuff dry and attachment points exist for your helmet and tail light. AIRSPEED VENTILATION - Tensioned backpanel reduces sweating, and the LightWire frame takes the weight off your shoulders and transfers it to your hips to provide stable, comfortable, and ventilated carry. INTEGRATED RAINCOVER - A little weather shouldn't stop anyone from riding. The integrated high-visibility raincover keeps your pack and gear dry on your ride from start to finish. RIDE STABILITY - Our new "winged" harness wraps the upper shoulders for added stability and keeps the pack comfortably close to your body. FEATURES - Women's-specific fit and sizing - Maximum ventilation with AirSpeed backpanel and bike-specific shaped harness - Dedicated hydration compartment with included Osprey Hydraulics LT 2.5L reservoir by Hydrapak - Front stretch mesh pocket - Scratch-free, heat-embossed zippered slash pocket - LidLock helmet carry - Blinker light attachment - Integrated removable high-visibility raincover - Magnetic sternum strap for quick access to reservoir bite valve - Zippered tool organization pocket - Dual stretch mesh side pockets - Dual upper and lower side compresion straps - Padded spacermesh hipwings with webbing ErgoPull waist strap provides comfort and stability AIRSPEED SUSPENSION - Peripheral LightWire frame creates a platform for a contoured tensioned mesh backpanel AIRSPEED BACKPANEL - 3D-tensioned breathable mesh backpanel provides extreme ventilation with a comfortable fit BIOSTRETCH HARNESS - Osprey engineered bike-specific harness with winged shoulder strap shape contours the shoulder providing superior comfort and stability - Soft breathable spacermesh contact surfaces and die-cut foam ventilation

With features and comfort that match your expectations of a top-tier mountain biking pack, the Syncro 12 is the ideal pack to carry a full day of gear in hot and humid climates. When you're pedaling under the sun, staying cool is a priority and the Syncro 12 delivers with a 3D-tensioned "trampoline-style" AirSpeed backpanel—our highest level of ventilation. A contoured mesh backpanel keeps things extremely comfortable and bike-specific shoulder straps curve to mimic the position you assume when reaching for your handlebars, providing superior fit and stability while you ride. An included 2.5-liter reservoir makes certain you don't go thirsty and an integrated removable raincover ensures weather won't rain on your parade. AIRSPEED VENTILATION - Tensioned backpanel reduces sweating, and the LightWire frame takes the weight off your shoulders and transfers it to your hips to provide stable, comfortable, and ventilated carry. INTEGRATED RAINCOVER - A little weather shouldn't stop anyone from riding. The integrated high-visibility raincover keeps your pack and gear dry on your ride from start to finish. RIDE STABILITY - Our new "winged" harness wraps the upper shoulders for added stability and keeps the pack comfortably close to your body. FEATURES - Maximum ventilation with AirSpeed backpanel and bike-specific shaped harness - Dedicated hydration compartment with included Osprey Hydraulics LT 2.5L reservoir by Hydrapak - Front stretch mesh pocket - Scratch-free, heat-embossed zippered slash pocket - LidLock helmet carry - Blinker light attachment - Integrated removable high-visibility raincover - Magnetic sternum strap for quick access to reservoir bite valve - Zippered tool organization pocket - Dual stretch mesh side pockets - Dual upper and lower side compresion straps - Padded spacermesh hipwings with webbing ErgoPull waist strap provides comfort and stability AIRSPEED SUSPENSION - Peripheral LightWire frame creates a platform for a contoured tensioned mesh backpanel AIRSPEED BACKPANEL - 3D-tensioned breathable mesh backpanel provides extreme ventilation with a comfortable fit BIOSTRETCH HARNESS - Osprey engineered bike-specific harness with winged shoulder strap shape contours the shoulder providing superior comfort and stability - Soft breathable spacermesh contact surfaces and die-cut foam ventilation

When you want to carry hydration on your back—and not much else—the Syncro 5 is your answer. It's everything you've come to expect in an Osprey pack, plus an AirSpeed 3D-tensioned backpanel that provides ultimate ventilation. Take the Syncro along on your next ride in the Arizona desert or humid Pacific Northwest and you'll understand. Comfort and stability are key with shoulder straps curved in the same position as your natural riding position and padded hipwings featuring an ErgoPull waiststrap. A 2.5-liter reservoir and high-visibility raincover are also included. AIRSPEED VENTILATION - Tensioned backpanel reduces sweating, and the LightWire frame takes the weight off your shoulders and transfers it to your hips to provide stable, comfortable, and ventilated carry. INTEGRATED RAINCOVER - A little weather shouldn't stop anyone from riding. The integrated high-visibility raincover keeps your pack and gear dry on your ride from start to finish. RIDE STABILITY - Our new "winged" harness wraps the upper shoulders for added stability and keeps the pack comfortably close to your body. FEATURES - Maximum ventilation with AirSpeed backpanel and bike-specific shaped harness - Dedicated hydration compartment with included Osprey Hydraulics LT 2.5L reservoir by Hydrapak - Front stretch mesh pocket - Scratch-free, heat-embossed zippered slash pocket - LidLock helmet carry - Blinker light attachment - Integrated removable high-visibility raincover - Magnetic sternum strap for quick access to reservoir bite valve - Zippered tool organization pocket - Padded spacermesh hipwings with webbing ErgoPull waist strap provides comfort and stability AIRSPEED SUSPENSION - Peripheral LightWire frame creates a platform for a contoured tensioned mesh backpanel AIRSPEED BACKPANEL - 3D-tensioned breathable mesh backpanel provides extreme ventilation with a comfortable fit BIOSTRETCH HARNESS - Osprey engineered bike-specific harness with winged shoulder strap shape contours the shoulder providing superior comfort and stability - Soft breathable spacermesh contact surfaces and die-cut foam ventilation

Optimized for both side and direct bottle entry, Zipp's Alumina cage provides easy access to hydration, especially on smaller bike frames and those with tight angles. Thin-but-strong arms flex for easy bottle insertion and removal, at any angle. - 27 grams

Designed and engineered specifically for the Vuka BTA mount, the Zipp Vuka Carbon BTA bottle cage is constructed completely from UD carbon fiber, for low weight and strength, as well as super secure bottle fitment. It's engineered to virtually eliminate bottle launch.

XLAB's Aqua Shot Calibrated Bottle has helped athletes win world championships and it'll help you perform your best, too. This unique, time-saving racing bottle has a high-flow squeeze valve and 4-ounce gradations so you can gauge your hydration. It's made of taste-free and safe BPA-free polyethylene with a fast-flow silicone valve that seals tight as soon as you stop squeezing. The valve is also not exposed to dust or contamination. This fine bottle is dishwasher top-shelf safe, can be used with carbonated beverages and is even shaped to fit better in bottle cages.