Durable - made of durable, waterproof, wear-resistant nylon that provides strength and long-lasting performance with the lightest possible weight. DIMENSIONS: Medium: 32 cm L x 14 cm W x 34 cm H, Weight: 0.55 kg. Large: 33 cm L x 15 cm W x 37 cm H, Weight: 0.6 kg. Please note that there may be a slight margin in the size of the backpack due to manual measurements. PRACTICAL STRUCTURE: 1 main zippered compartment with 1 inner zippered pocket and 2 inner pockets, 2 side pockets, 2 front zippered pockets. Multiple pockets can hold your iPad Pro, mobile phone, umbrella, water bottle, house keys and other small items. Perfect for use at the office, school, dating, travel or other daily occasions. CLOSURE: Zipper on the back, effective anti-theft, it is rainproof, there is no worry about the items in the bag getting wet on rainy days. The backpack strap is adjustable. And you can wear it as a shoulder bag or backpack as there is a detachable short shoulder strap. Detachable and adjustable long shoulder straps and rabbit plush ball decoration.