Mad Pax Spiked Backpack &ndash; Pink Full Size Covered in soft spikes, this unique faux leather backpack guards gear while making a bold statement. This dome-shaped, spiked backpack holds up to 6 books, and has a padded laptop sleeve and a front zip accessory pocket. Great for storing small items like pens, pencils, cell phones and lunch money. Padded laptop pocket. Dimensions: 17. 0 " h x 12. 0 " w x 6. 0 " d.