Strong , Sturdy, Compact, Lightweight but with a lot of storage spaces. You can put your necessary things like phones, camera, tablets, keys, snacks, etc. It is a mini bag just for your necessities. Casual daypack backpack with USB charger outside and charging cable inside, convenient to charge any devices while walking( NOT include power bank). Made of high quality water-resistant canvas and polyester material. Fashion, multi-function and practical design, and comfortable to wear. Use upscale canvas, it is not easy to be scratched.