Material: Nylon. Size: 11.8''L * 4.7''W * 17.7''H. Using NyloThere Are Also Adjustable Strap Buckles, Which Can Be Adjusted Freely According To Needs, Which Is Beautiful, Convenient And Practical.n Material, Wear-Resistant And Tear-Resistant, Light Backpack. Multi-Level Space Design, Storage Becomes Simple And Orderly. There Are Also Adjustable Strap Buckles, Which Can Be Adjusted Freely According To Needs, Which Is Beautiful, Convenient And Practical. The Design Is Simple And Fashionable, Suitable For People Of Different Ages. Strap Type : Shoulder Strap