2L(70 oz) Hydration Bladder Bag: This water backpack passed the pneumatic pressure 24-hour swing test and 24-hour vibration test. Fully pressure and leakproof for carefree cycling, running, hiking, and other outdoor adventures. Made of EVA material, 100% odorless, tasteless. High Quality and Comfortable Material: The hydration Backpack is made of high-grade nylon waterproof material, light, wearable, and comfortable, a breathable mesh back to prevent sweating and provide comfort, which is the best choice for outdoor sports. Adjustable and Reinforced Shoulder Straps: Adjustable shoulder and chest straps allow you to make your hydration pack fit perfectly and prevent hydration backpack movement. The wide mesh shoulder straps help to reduce the shoulder load, and the shoulder straps are reinforced with two triangular stitches. Double Zipper & 3 Pockets: The water bag is divided into 3 layers, one for the hydration bladder bag and the other 2 pockets for you to store your belongings such as mobile phones, wallets, and keys. There is a mesh bag outside for portable towels, which provides the best convenience for sports enthusiasts. Ergonomic Design: The hydration packs with 2L water bladder are lightweight and have low resistance, suitable for both men and women.
