Accept customization (logo, color, size, style) low price and MOQ A backpack refers to a bag that can be carried on the back to carry items, usually with one to two shoulder straps, and can be hung on the human back. There are various materials and styles of backpacks, including leather, plastic, polyester, canvas, nylon, cotton and linen, among others. According to different purposes, backpacks can be divided into various types such as business bags, school bags, travel bags, pencil cases, spare wallets, small sachets, etc. In addition to practical functions, backpacks can also be used as fashion accessories to showcase personal taste and style.