3L Hydraulics Reservoir Color:Blue Designed well over a decade

Designed well over a decade ago

Adjustable snap back

We've updated this 100% Merino wool fan-favorite with new color options and an enhanced fit to improve functionality while elevating aesthetics

EVA (ethylene vinyl acetate) is a high-quality

warm and recycled

3L Hydraulics Reservoir Color:Blue Designed well over a decadeOsprey's Hydraulics 3L 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 according to FDA and EU