GRAYSON BACKPACK 1 AS-NAVY Waterproof bag The interior is well-organized and smart, with a laptop compartment. Convenient front and side compartments. The outer fabric is treated to be waterproof. The exterior fabric and interior lining are treated with antibacterial agents. Hidden compartment at the back of the backpack Material: 100% Polyester Capacity: 21 L Dimensions: 30 x 17 x 45 cm Weight: 0.5 kg 1-year international warranty