Gift: 50L with buckle and lock, 40L only with the lock Technics: Embossing Gender: Unisex Backpacks Type: Softback Capacity: 36-55 Litre Interior: Shoe Pocket Interior: Interior Compartment Interior: Computer Interlayer Interior: Interior Zipper Pocket Interior: Interior Slot Pocket Interior: Cell Phone Pocket Item Type: Backpacks Closure Type: zipper Exterior: Silt Pocket Carrying System: Arcuate Shoulder Strap Lining Material: Polyester Style: Casual Pattern Type: Solid Backpack Measurement: 50L:35x22x60CM /12.8x8.66x23.6INCH Backpack Measurement2: 40L:32x20x55CM/12.6x7.87x21.65INCH Weight: 40L:1.6kg 50L:2.1KG Style: Fashion Backpack, Leisure backpack,Casual Backpack Type: Laptop Backpack,School Bag Application: Backpacks for travel, business, school Patent: Anti-theft and Anti-water climbing backpack: Functional backpack Color: Black, Army green, Camouflage, Khaki