COMFORTABLE CARRY = Lightweight Water Pack designed for comfort. Ultra-light, streamlined, and easy to adjust. Fully adjustable shoulder/chest straps conform to your body with no bounce! Fits all sizes. 2L HYDRATION BLADDER INCLUDED = PVC & BPA Free bladder for our kids hydration backpack. Leak proof and easily removable via the main pocket. Oversized 2-inch wide screw cap allows ice for an even cooler drink & makes cleaning easy. FUN DESIGNS & COLORS = If you are tired of boring hydration pack backpack then our bright colors, unique styles & patterns are for you. Stand out at your next music festival, rave, edm or edc event with our rave essentials. PERFECT FIT = Our water pack backpack is built for for men, women, teens, and youth. Fully adjustable and fits all sizes comfortably. Made with comfort-stitched straps with high-density notched foam stabilizers and breathable light weight mesh HIGH-QUALITY CONSTRUCTION & DESIGN = Our hydro pack backpack is built with cushioned, breathable mesh back panel with quick drain drip hole. Stay-put thumb adjustment loops for shoulder straps maintain your settings NEW* NO LEAKS 2023 MODEL - Our completely NEW and UPGRADED hydration bladder prevents all leaks due to our custom mouth piece and proprietary technology we've developed for our connecting valves.