Osprey Hydraulics 2L size:O/S It is extremely lightweight

It is extremely lightweight

2 ozWeight (Metric):  0

which means the people who made them earned a premium for their labor

Lumens :  250

Dual upper side compression straps

Osprey Hydraulics 2L size:O/S It is extremely lightweightOsprey's Hydraulics 2L 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. Specs Volume Dimensions Weight O S 70 in3 2 l 14h x 6w x 3d in. 0. 66 lbs. Fabric Main: TPU film Accent: TPU film Bottom: TPU