On Sale. CamelBak HydroBak 50oz Hydration Pack DECENT FEATURES of the CamelBak HydroBak 50 oz Hydration Pack External fill Diamond mesh back panel Lightweight mesh harness Essentials pocket Reflectivity Short torso sits above jersey pockets Designed to Carry: Multi-tool or wallet, keys The SPECS Total Capacity: 1.5 liter Reservoir Pack Only Weight: 5.6 oz / 160 g Dimension: 13 x 7 x 3.5in. / 33 x 18 x 9 cm Hydration Capacity: 50 oz / 1.5 liter Frame Size: 13 in / 33 cm Fabric: 210D Nylon and 70D Diamond Clarus with DWR 1000 mm PU