Its hybrid shell design adds durability without weighing you down

- Homer Simpson

Park Tool CC-2 Chain Wear Indicator

Unisex sizing

Thermal fabric traps body heat and wicks moisture

Hydraulics Reservoirs Color:Clear / Blue Its hybrid shell design addsOsprey Hydraulics Reservoirs Ospreys Hydraulics Reservoir by Hydrapak is ideal for large volume packs and long duration activities. The HydroStatic backerplate provides structure for easy loading into a full pack and maintains 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