100% Nylon Imported 【Lightweight 12L Hydration Belt】Super lightweight 8.5 oz hydration belt with a 2L water bladder. Waterproof and tear-resistant fabric, PU-coated nylon hydration belt can withstand 25 lbs. 【Leak-proof and Anti-popping Water Bladder】Hiking water backpack with 2L bladder, BPA-free, food-grade PEVA material and hose clamp. Leak-proof bite, water flows quickly and never drips when locked. 【Comfortable, Breathable & Adjustable】Multiple adjustable shoulder straps on the hydration belt, adjustable to 19"-34" on shoulder straps, 2.4"-7.9" on chest strap (up and down). Hydration belts are suitable for adults. Ergonomically fitted to your shoulders, chest, and waist. Soft air mesh on the back increases airflow and keeps your back cool. 【Thoughtful Storage Details】Running backpack dual-direction main zipper compartment for water bladder, small storage compartments on the front, two small mesh pockets for umbrella, mineral water, BlueTooth stereo, two mesh pockets on the shoulder for phone and keys. 【Multiple Uses】Our hiking backpack with water bladder is suitable for hiking, running, MTB cycling, climbing, music carnival, and other occasions. This running vest with hydration can be a great gift for family and friends. N NEVO RHINO focuses on outdoor sports backpacks, and vitality flourishes from here. 【Perfect After-Sales】If you have any problems, please contact us, we will reply within 24 hours. (We provide replacement services for quality problems within 1 year and lifetime customer service)