MINI Backpack: Designed with the coolest soft spikes in vibrant colors, the MINI Dino Backpack is perfect for carrying books, snacks, toys and more. Carrying your treats and playing dress up all at once is now totally possible.  MIDI Backpack: Designed to fit school supplies such as folders, binders, tablets and laptops. Roomier than the MINI, the MIDI has many internal & external pockets including a side bottle pocket.