Lightweight and comfortable: weighing only 15 ounces, with adjustable shoulder straps, the ergonomic design makes your back more comfortable. The soft and breathable mesh back padding keeps your back cool and dry.Multi-purpose: This all-in-one hydration bag backpack combines value-added, fashion, lightness and versatility. Other uses include hikers, cyclists, climbers, runners, hunters, travelers, outdoor sportsmen, anglers and tactical use.High-quality materials: Our hydration bag backpack is made of high-density Oxford cloth and nylon lining ultra-light waterproof material, which is completely pressure-resistant and leak-proof. The water bag is made of TUP material.Easy to use: This water bag is very simple to use: Step 1: Open the water filling spout and fill it with water; Step 2: Take out the hose from the bag hidden inside the water bag and you can drink water. You can also take the water bag out of the bag and put it in the backpack for use.Compact and Portable: This tactical hydration backpack measures 7"W x 17"H and weighs only 15 oz, but comes with a fully removable 3L (100 oz) hydration bag and extra pockets, providing ample space for your daily necessities. It keeps you cool and dry when you're out. Stylish, comfortable and durable.