Accmor Hydration Pack with 2.5L Water Bladder, Black Lightweight Hydration Backpack with Adjustable Shoulder Strap, Survival Outdoor Backpack Rucksack for Climbing Running Camping Cycling Hiking Durable - Rugged 600D waterproof Oxford fabric and nylon lining, Back with breathable mesh, durable plastic insert buckles with ultra-high hardness, abrasion. Special Design - Two Layers cargo design, one for hydration bladder, and the other for extra carrying purpose, like your phone, keys and some small tools. Slender and portable design with middle handle strap and adjustable webbing chest and shoulder straps. Easy to Drink - Hands-free hydration hose with bite valve, gently biting the valve to open up the flow of water, so you don't need to hold it to drink. Replacement 2.5L Bladder - Includes a 2.5 Liter BPA free bladder which keeps you hydrated. Enough to get you through a day of hiking, cycling, running, climbing. Easy to Carry - Handle on the top of the bag lets you easily tote it, Our hydration pack has four D rings on its front for attaching it to other gear bags, Top and front handles make it easy to lift and tote.