Brand new unisex high-quality durable waterproof backpack made with polyester material. It has a cushioned strap to reduce pressure on the back and designed with a honeycomb material to promote air circulation. It has a USB charging port to charge phones or laptops (the internal interface is connected to the power supply, and the external interface is connected to the phone or laptop). This backpack measures 43cmx30cmx14cm, regular backpack size, and comes in color black, blue, and gray.