1: [Lightweight design]: durable nylon fabric, lightweight and sturdy, comfortable fabric, light travel does not give you an extra burden. Lightweight and simple travel, all the way to the heart to accompany.- 2: [Back honeycomb breathable]: mesh cotton comfortable and lightweight, not stuffy, summer travel can also continue to be comfortable and dry.- 3: [Portable USB charging design]: charging at any time, no matter out shopping or travel, anytime, anywhere, no power to experience the comfort of quality life.Equipped with a combination lock design that prevents theft and protects all your valuables well.- 4: [Multi-segment compartment]: large-capacity main pocket, multi-compartment pocket design. Scientific storage, at a glance reasonable space design, functional hierarchy, can accommodate cell phones, sunglasses, chewing gum and other belongings- 5: [Long shoulder straps detachable design]: 1 backpack 6 backpack ways shoulder, crossbody, handheld, double shoulder and left shoulder back, right shoulder back and other backpack ways a bag to meet a variety of practical needs.