BestFyou 2014 New Style Shark Mouth Design Backpack/Schoolbag (blue-big) Material:PU Size:Big(30cm*13cm*49cm),Middle(30cm*14cm*40cm),Small(27cm*7cm*35cm) Double zipper design, two sides storage pockets, one front zipper pocket, main bag Kindly reminder: You will get the bag showed in the first picture, the others are used to show the detail information of the bag, hope you can understand. Widen and thicken shoulder straps, reduce the burden effectively.