【Upgraded materials】Made of high density waterproof and Luxury carbon fiber material.Ergonomics mesh back design with breathable strap can relieves your shoulders of long carry-on. This small sling backpack is semi fixed bag and has large capacity. Only H13"* L7" *W3.9", 0.46KG/1.01lb. It's light weight 、waterproof and scratch resistant .It's a great choice use for sports、camping、hiking、travel、working、biking、overnight trip and others occassions . 2 Ways adjustable shoulder strap to fit your body perfectly. Best gift you can choose. 【Functional & Safe】Good quality and durable code lock design, which can protect your personal things perfectly when you go outside.Hidden USB charing(Double ports ) port make your phone easy to charge when you at outdoors and travel It provide a hidden pocket at the back can protect your wallet and valuables from stolen. 【Multi storage pockets】Front side pocket is convenient for various small items. Large compartment with inner small pockets is great for 9.7 inch flat、camera、power bank、water bottle、Notebook、pens. Exclusive card pocket on the shoulder strap make this chest bag thoughtful. 【Ultimate Customer Service】Every of sling bags Has passed multiple strict quality control. But if you have any problems, please feel free to contact us.