Hydraulics 3L Res Space Gray and a varied brim width

and a varied brim width design to deliver the gold standard in sun protection for long summer days spent outdoors

Ready for your next international adventure

while the included duffel-style storage bag makes pack-up a breeze

and has a soft polyester fleece back

this one's for you

Hydraulics 3L Res Space Gray and a varied brim widthOsprey'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