Capacity:36-55L. Package internal structure:Zipper pocket. Open cover:Zipper. Material:Nylon. Function:Ventilation. Hardness:Medium Soft. Pattern:Solid Color. Liquor texture:Polyester. Popular element:Collision. Ticking parts:Soft. Outer bag type:Three-dimensional bag. Luggage shape:Vertical square shape. Scene:Outdoor,School, Date. Color:Yellow, Blue, Black, Pink