Unisex cycling specific lumbar-pack from Osprey1.5L HydraulicsTM Lumbar Reservoir includedAirScapeTM backpanel with foam ridges for comfort180 degree on/off bite valveFront zipped pocketZipped scratch-free sunglasses/electronics pocket2x zipped hip belt pocketsInternal hydration sleeveInternal organisation pocketInternal mesh side pocketInternal key attachment clipLight attachment pointSide compression strapsReflective graphicsMain fabric: 210D Poly HoneycombMaximum dimensions: L20 x W33 x D15cmWeight: 0.37kg