Madpax Spikes Backpack Gray 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 Dimensions: 17.0 " H x 12.0 " W x 6.0 " D Padded, adjustable shoulder straps