Welcome to our store！</br> 1、Adjustable shoulder straps make your backpack perfectly fit your back without moving. 2、There is a sponge cushion on the back, which helps to reduce the burden on the shoulders. 3、Two-layer pocket design. One pocket is used for water bags, and the other pocket is used for keys, compasses, mobile phones, etc. 4、The reflective strip design makes it safer and more convenient to travel at night. 5、Made of light and breathable mesh fabric and high-quality nylon fabric, light and comfortable, durable. 6、Pressure-resistant, leak-proof backpack, suitable for running, hiking and other outdoor adventures. <p class="wang-edit-text">Item Type: Hydration Backpack Material: Mesh+Nylon+Sponge Product Color: Silver Product Weight: Approx. 192g / 6.8oz <style> .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }</style> 1 x Backpack&nbsp; Satisfaction - Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactoryaftersalesservice</br>