Heys ePac05 Rolling Laptop Backpack - Black The rolling ePac measures: 21 inches x 14 inches x 11inches and is made of 1680 denier nylon The ingenious design converts ePac from rolling backpack into a regular backpack with just one zipper The innovative patent-pending side-loading laptop compartment is padded with 4 walls of foam and a thick 2 inch foam base and can fit most 15 inch screen laptops The internal telescopic handle system with inline skate wheels allows for smooth and easy rolling The ePac contains a double zipper compartment designed for your adapters and cables and comes with a "TechnoPod", a portable media pocket for electronics and gadgets