Make sure this fits by entering your model number. Multi-compartment and Comfortable: Build with 4 zippered pockets and 2 waist strap pockets. SHARKMOUTH hydration backpack keeps all your stuff organized, without being too big and bulky. The additional chest/waist straps help distribute the weight over your whole body, and not just on your shoulders. Large Capacity: Size 17.7*5.5*10.2 inches， weight 1.64 lb. This water backpack is substantial for long, even all-day hikes or adventures and there is plenty of room in the backpack for snacks and even a jacket. The two waist strap pockets are perfect for keys, phones, or other quick reach items.