Holographic Reflective Luminous Backpack. Rainbow Shinning Effect (Color Changes When Light Changes). L34.5*W13.5*H31.5 cm The Interior Features: One Main Pocket, One Zipper Pocket and Two Small Opened Pockets. Main Material: PU Lether. Lining Material: Linen. Closure Type: String. Adjustable shoulder straps. It's a cool backpack and shoulder bag. You will get a lot of compliments when wear it out! It's a great birthday or holiday gift too.