ACVCY Hydration Backpack with 2L Water Bladder, Backpack Reservoirs Water Bladder with Adjustable Straps Daypack for Running, Hiking, Biking, Festivals, Raves (2 Pack)

*2L Hydration Bladder Bag: This cycling backpack passed pneumatic pressure and 24-hour swing test and 24-hour vibration test. Fully pressure and leak proof for carefree cycling, running, hiking and other outdoor adventures. Made of EVA material, 100% odorless, tasteless

*High Quality and Comfortable Material: Hydration Backpack is made of high-grade nylon waterproof material, light and wearable, comfortable and breathable mesh back, to prevent sweating and provide comfort, is the best choice for outdoor sports

*Adjustable Shoulder Straps: Adjustable shoulder straps and chest straps allow you to make your backpack fit perfectly and prevent backpack movement. The wide mesh shoulder strap helps to reduce the shoulder load, ideal for exploring nature and outdoor activities

*Double Zipper & 3 Pockets: The storage bag is divided into three layers, one for the hydration bladder bag and other two 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 backpack with 2L water bladder is lightweight and has low resistance. Blue and gray are suitable for both men and women