CamelBak Viper Black Backpack With Bladder 3.1L

EUC, no flaws on this 3.1L bladder size hydration pack. Double sided zip pocket in the front holds your essentials. Bladder included, has not been tested. Adjustable shoulder straps with supportive chest strap. Manufacturer description including specs in pix. Tags: outdoor, hiking, running, camping, trails, outside, hydration, water, bladder, trek, adventure, explore, travels, pedestrian, tactical,