The inner compartment of the backpack is made of EPE. This material is very durable and waterproof. Shoulder straps are ergonomically designed to reduce pressure on the spine and ensure smooth transport throughout the day. The elegant and durable fibers are reinforced with a steel construction that guarantees the strength and flexibility of the backpack. The shoulder strap is adjustable to the user's needs, the zippered design is non-slip and the strap is made of nylon.For your tablet and notebook up to 14 "". Very accessible space for personal belongings. Water resistant material. Adjustable straps. Reinforcements, handles and strong front pockets to withstand wear. Capacity (in litres): 19L Net Weight: 400g Color: Blue Material: 100% Polyester Lining: 100% Polyester Compatible Laptop Size: 14 inch Bag Opening Mode: Zip