Specifications Dimension:11.4x7.8x15.7inch(29x20x40cm) Material Description: Environmentally friendly lightweight super strong polyester canvas and smooth zipper. High quality materials make you feel comfortable when carrying. The empty bag is upright and the packaging type is rigid. Product performance: Ergonomic design: Adjustable shoulder straps and back are padded to provide comfort, cushion protection for laptops or tablets, and protect your back when carrying heavy objects. No more shoulder discomfort. Applicable scenario:Multifunctional backpack: Fashion printed backpack is an excellent backpack for daily life. Portable, suitable for school, work, weekend vacations, travel, hiking, camping, hunting, hiking, cycling, and other outdoor activities. I am also a great Thanksgiving, Christmas, birthday, Valentine's Day gift for your best friends, friends, family, classmates, etc Accessory Construction:Large Capacity: Internal 1 main compartment, 4 internal small pockets, suitable for your laptop, iPad, charger, books, clothes, snacks, wallet, pencil case, wallet, textbooks, notebook, etc. Create. 2 x side mesh pockets in sequence. Adjustable. Suitable for your umbrella, water bottle, and juice box. 1 Front zip pocket, suitable for your keys, mobile phone, small napkins, pens, and other small items, or other primary school supplies Special Note:Due to different measurement methods, this size data with an error within 1-3cm is a normal phenomenon.