Size: Large ?Height 41 * Width 30 * Thickness 16cm
? ? ? Small ?Height 36 * wide 30 * thickness 16cm

Fabric: comprehensive waterproof， wearable， not afraid of dirty
Design: modeling design， like swallows flying in the sky， the perfect curve fashion dynamic
Capacity: large capacity， super textbooks can meet your needs
Shoulder straps: widened sponge shoulder straps Ergonomic S-shaped shoulder strap lining