Weight:580g. Main material:nylon. Lining material:terylene. Closing mode:zipper. Strap:two. Size:13.39''L×7.87''W×14.96''H(34cm×20cm×38cm). Washable or not:no. Number:12. Customized Inspiration. This backpack is made of nylon material. The texture of the bag is soft and delicate, resistant to dirt and construction, and the body is lightweight. The upper body is casual and lazy without losing its temperament, and there is also a anti-theft partition design at the back, giving it a perfect sense of security.