If you want buy 16inch ,please go this link:
https://www.aliexpress.com/store/product/High-Quality-Children-School-Bags-3D-Spiderman-Cartoon-School-Backpack-Bag-For-Boy-Kids-Satchel-Mochila/1759485_32650844233.html
3D Cool School Bag Boys Backpack Kids Children Cartoon School Bags Baby Child Backpacks Escolar Mochilas
13inch fit:3-6 age size:30*26*12cm