A streamlined, 1-piece bite valve with fast-flowing, self-sealing, leak-free performance, the Platypus HyFLO is made of soft, taste-free, medical-grade silicone to stand up to years of use.

Pack, Bag, and Case Parts and AccessoriesHydration Pack Bite Valves

Stay cool without slowing down. The HydraPak HydraSleeve 3-liter insulated reservoir keeps your water flowing cold, and it's built tough so it can be tossed around when outside your pack.

Pack, Bag, and Case Parts and AccessoriesHydration Reservoirs

The Osprey Hydraulics bite valve provides a high-quality replacement for your old beat-up standby.

Pack, Bag, and Case Parts and AccessoriesHydration Pack Bite Valves

Keep your Hydraulics reservoir bite valve free from dirt and dust on the trail with the Osprey Hydraulics bite valve cover.

Pack, Bag, and Case Parts and AccessoriesBite Valve Covers

The 1.5-liter Osprey Hydraulics LT reservoir is made for light and fast activities where weight and balance (and hydration) are critical.

Pack, Bag, and Case Parts and AccessoriesHydration Reservoirs

The 2.5-liter Osprey Hydraulics LT reservoir is made for light and fast activities where weight and balance (and hydration) are critical.

Pack, Bag, and Case Parts and AccessoriesHydration Reservoirs

Stay hydrated on mountain bike rides, hikes or any other outdoor adventure with the 1.5-liter Osprey Hydraulics lumbar reservoir made to fit your Osprey Seral pack (sold separately).

Pack, Bag, and Case Parts and AccessoriesHydration Reservoirs

The 2-liter Osprey Hydraulics reservoir is ideal for large-volume packs and long-duration activities.

Pack, Bag, and Case Parts and AccessoriesHydration Reservoirs

The 3-liter Osprey Hydraulics reservoir is ideal for large-volume packs and long-duration activities.

Pack, Bag, and Case Parts and AccessoriesHydration Reservoirs

When it's time to replace the hose on your existing hydration system, the Osprey Hydraulics Reservoir Hose is the answer.

Pack, Bag, and Case Parts and AccessoriesHydration Pack Flow Tubes

This package of 3 Osprey Hydraulics silicon nozzles provide a soft surface for your teeth to sink into when you're hydrating on the fly.

Pack, Bag, and Case Parts and AccessoriesHydration Tube Accessories

The Osprey Hydraulics sternum strap and tube magnet kit magnetically secures your hydration pack's tube out of the way when you don't need it, while keeping it front and center for when you do.

Hydration Tube AccessoriesTube Clips

Stay hydrated with the Gregory Hydro 2-liter hydration reservoir. Its leakproof screw cap makes it as easy to fill as your favorite water bottle, while the magnetic bite valve keeps the hose close.

Pack, Bag, and Case Parts and AccessoriesHydration Reservoirs

Tired of the hydration tube on your reservoir freezing on winter runs? Or heating up on hot summer hikes? This Osprey insulated hose and valve cover keep your hydration flowing in all 4 seasons.

Pack, Bag, and Case Parts and AccessoriesHydration Tube Insulator Kits