Hydration

UPDATED: Protects bite valve from dirt and debris; slows freezing. Whether you set down your pack on the muddy trail or in the snow, protect what goes into your mouth from dirt and debris while slowing down the freezing process with the updated Platypus® Bite Valve Cover. The new shape ensures your cover stays closed and it fits with all Platypus hydration system bite valves.

NEW: Fast-flowing bite valve works with all Platypus shutoff valves and 1/4" tubing The HyFLO™ is a streamlined, one-piece bite valve that offers fast-flowing, self-sealing, leak-free performance. Made with a soft, taste-free, medical-grade silicone, the HyFLO stands up to years of use. The bite valve is included on all Big Zip™ EVO & Hoser™ Reservoirs and is compatible with all legacy Platypus shutoff valves.

Threaded cap fits our screw-top bottles and reservoirs. These secure, leak-free replacement caps fit Platypus flexible water bottles, reservoirs, and water tanks with threaded, screw-top openings. Package includes two caps.

UPDATED: Ultralight taste-free, minimalist reservoir with high flow rate. The original Platypus® water reservoir that became a backcountry classic, the Hoser™ is an ultralight, minimalist hydration system that delivers taste-free hydration with a versatile, durable design that makes it great for backpacking, thru-hiking, and day hikes. Updates include a new self-sealing HyFLO™ bite valve that delivers a 30% increase in flow rate, making it quicker and easier to hydrate on the go.

Small but mighty, the Duro 1.5 offers up a slim and streamlined carry for trail runners and racers looking for a minimal pack that still handles ample water. Its included 1.5-liter reservoir will keep you hydrated miles after your last support stop. Made with 100% recycled materials.

The road ahead may be long, but you're ready. The Duro 6 is a favorite choice for trail runners and racers who don't tap the brakes. Its included 1.5-liter reservoir inspires confidence when your journey takes you beyond support, and it has enough room for extra layers and calories for big days. Made with 100% recycled materials.

Take a load off, whether you're training or exploring the trails, with the Duro/Dyna Belt. Designed to move with you, without any friction, while providing up to 720 mL of hydration between its two included soft flasks and room for keys, gels and your phone to boot. Made with 100% recycled materials. WEIGHT 0.474 LBS.

Take a load off, whether you're training or exploring the trails, with the Duro/Dyna Belt. Designed to move with you, without any friction, while providing up to 720 mL of hydration between its two included soft flasks and room for keys, gels and your phone to boot. Made with 100% recycled materials.

Small but mighty, the wo Dyna 1.5 offers up a slim and streamlined carry for trail runners and racers looking for a minimal pack that still handles ample water. Its included 1.5-liter reservoir will keep you hydrated miles after your last support stop. Made with 100% recycled materials.

The road ahead may be long, but you're ready. The women's-specific Dyna 6 is a favorite choice for trail runners and racers who don't tap the brakes. Its included 1.5-liter reservoir inspires confidence when your journey takes you beyond support, and it has enough room for extra layers and calories for big days. Made with 100% recycled materials. WEIGHT 0.944 LBS. 0.895 LBS. 0.847 LBS.

The next generation of reservoir is here. Redesigned from tip to tail, the 2-liter Hydraulics reservoir features innovative and ergonomic improvements that make it easier to carry, fill, load up and use-whether you're buzzing around town, travelling or hitting the trails. This version features a lightweight yet sturdy backer plate that helps reduce bending or buckling while loading, making it ideal for internal or external pack hydration sleeves.

The next generation of reservoir is here. Redesigned from tip to tail, the 3-liter Hydraulics reservoir features innovative and ergonomic improvements that make it easier to carry, fill, load up and use-whether you're buzzing around town, travelling or hitting the trails. This version features a lightweight yet sturdy backer plate that helps reduce bending or buckling while loading, making it ideal for internal or external pack hydration sleeves.

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 all-new, next-gen bite valve is compact while still delivering great flow, with a smooth, on-off valve that is easy to operate one-handed. Installs on any 0.25 in. / 6.35 mm hose.

This magnet clip has been improved to ensure a more secure hose capture for 0.25 in. / 6.35 mm reservoir hose and magnetic bite valve attachment to keep your carry svelte and bite valve up and out of the way.

The next generation of reservoir is here. Redesigned from tip to tail, the 1.5-liter Hydraulics LT reservoir features innovative and ergonomic improvements that make it easier to carry, fill, load up and use-whether you're buzzing around town, travelling or hitting the trails. Designed specifically for lumbar packs for off-the-back hydration.

The next generation of reservoir is here. Redesigned from tip to tail, the lightweight 1.5-liter Hydraulics LT reservoir features innovative and ergonomic improvements that make it easier to carry, fill, load and use-whether you're buzzing around town, travelling or hitting the trails. This version gets dual baffles, keeping the reservoir as light as possible while still offering improved control and structure and works best with internal reservoir sleeves.

The next generation of reservoir is here. Redesigned from tip to tail, the lightweight 2.5-liter Hydraulics LT reservoir features innovative and ergonomic improvements that make it easier to carry, fill, load and use-whether you're buzzing around town, travelling or hitting the trails. This version gets dual baffles, keeping the reservoir as light as possible while still offering improved control and structure and works best with internal reservoir sleeves.

• Installs on any 1/4-inch (.635cm) hose for easy disconnect/connect. • Bonus extra male piece and hose to connect to water filters.

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.

Add-on or aid replacement for vest-pack harness pockets.

The Kitsuma 1.5-liter offers a low-profile option with no unnecessary frills for riders who require ample hydration and nothing more. The pack's included next-gen Hydraulics™ reservoir provides critical hydration while its comfortable, stable design seemingly disappears on trail, so you can focus fully on the singletrack ahead. WEIGHT .882 LBS.

When you want to carry water on your back-and almost nothing else-the Katari 3-liter bike pack has you covered. Carry a few essentials, be it a multitool or some light snacks, with its minimal storage while the included next-gen Hydraulics™ 2.5-liter reservoir provides ample hydration for you afternoon or all-day rides. WEIGHT .97 LBS.

At seven liters, our largest Katari bike pack comes with the next-gen 2.5-liter Hydraulics™ reservoir to keep you hydrated on your longer rides and enough storage to pack snacks, tools and an extra lightweight layer on your next all mountain or trail ride. Still minimal and streamlined, it offers a little more flexibility for gear without getting bulky. WEIGHT 1.235 LBS. VOLUME 427 IN3 / 7 L

For mountain bikers looking to spend premier time on the trail, from rolling singletrack to the downhill park, the Raptor 14-liter is a category-leading pack with best-in-class performance. Carrying the next-gen Hydraulics™ reservoir and a robust feature set built to accommodate your biggest all-day sends, there's no wonder it's a favorite for mountain bikers everywhere.

Get rowdy with the unisex Raptor Pro, Osprey's most extreme mountain biking pack for gravity-focused riders. Built specifically for dropping into the steepest lines and tackling the techiest terrain, it takes protection up a notch with its D30 full back protector for impact absorption. Deluxe organization for tools, padding and everything else you can imagine make it ideal for anything from the bike park to your longest freeride missions.

With a little more room and a focused feature set, the Siskin 12-liter is a well-balance performance mountain biking pack for adventurous day son the trail. Coming with a next-gen 2.5-liter reservoir, it also has a generous main compartment with plenty of room for your spare tubes, multi-tool, trail pump, extra lightweight layers and more.

With a little more room and a focused feature set, the Siskin 12-liter is a well-balance performance mountain biking pack for adventurous day son the trail. Coming with a next-gen 2.5-liter reservoir, it also has a generous main compartment with plenty of room for your spare tubes, multi-tool, trail pump, extra lightweight layers and more.

Designed for discerning mountain bikers looking for a do-it-all pack, the 8-liter Siskin provides a stable, breathable and highly-comfortable carry. A next-gen reservoir provides plenty of hydration for your biggest rides and features like a separate main compartment and LidLock helmet carrier give it all-day versatility.

For quick hikes on local trails, convenient hydration makes stretching your legs-and the miles-a breeze. The Skarab 30-liter is a no-frills, all-essentials hiking pack that adds plenty of room for extra gear, layers or snacks for longer trips from your backdoor to beyond. Its priority is comfortability for moderate hikes and daily exploration, with the next-gen Hydraulics reservoir and simple organization so you can carry just what you need.