Size and material: 26 (L) x 15 (W) x 38 (H) cm. High quality soft PU backpack. Adjustable: 1 detachable shoulder strap and 2 adjustable shoulder straps. The shoulder straps of the backpack are adjustable. Thanks to the detachable short shoulder strap, it can be carried as a crossbody bag or backpack. Practical construction: Soft synthetic leather that is water-repellent and easy to clean. Big enough for enough textbooks, a lipstick case for shopping, an umbrella and mugs for travel. Inside: 8 pockets. Anti-theft zipper on the back. Vertical zips on front left and right. Zipper at front bottom. Main inner compartment, plus hidden zip pocket and two non-zip pockets. Warm and friendly design: Back zipper, effective anti-theft design, rainproof, dont worry about the items in the bag getting wet in rainy days.