QUAY Key 3-way Water-Repellent Nylon Backpack The material is durable nylon! Water-repellent nylon to handle light rain. Durable and long-lasting. You'll want to have one of these backpacks, and nylon is recommended because you'll use it every day. It can be used as a backpack, a shoulder bag, or carried by hand - 3-WAY! With 10 storage compartments, including the main storage pocket, you can always stay organized! A4 files are supported, making it convenient for everyday use and commuting. ⚪︎Size Approximately 32cm tall x 33cm wide (opening), approximately 28cm wide (bottom) x 11cm depth. Shoulder strap: 65cm - 116cm Please search online for more details.