Hi, See you again~ This week, I'd like to introduce a very practical tactical hydration backpack. See the picture, very cool, right? The size of this Water Bladder Lightweight Backpack is19.7”x8.7”x2.6” in size. Ergonomically fits for your shoulders, chest, and waist. 3 straps are all adjustable for reducing bounce. Soft air mesh back speeds up air-flow and makes your back cool. Foam padded s...