This lightweight hydration backpack is crafted from waterproof and tear resistant polyester weighing only 1 lb. It includes a BPA free 2 liter EVA water bladder featuring a leakproof bite valve for a steady drip free flow. Designed with ergonomic adjustable straps and a breathable air mesh back it ensures maximum comfort for adults during hiking or cycling. The spacious main pocket and front compartments keep essentials secure. You can add a full color printed logo to the fabric to create a premium promotional gift for corporate events and outdoor enthusiasts.