The Boombox Masta Blasta by Mojo is not only a great looking backpack in its own right with a hi-def retro boombox print design, but it also incorporates a pair of studio grade speakers into the front surface powered by a hidden battery pack contained within the main compartment. Simply connect your iPhone, iPod or MP3 player to the 3.5 mm auxiliary jack plug to enjoy your tunes on the move. The backpack measures 17 x 12 x 6 inches and consists of a main compartment with zip closure, a front zip compartment and two side pockets, one of which houses the MP3 connector. The Boombox backpack also includes a top entry padded tablet sleeve for safe storage and quick access to your tech. The backpack has adjustable straps for custom sizing and a carry handle. The backpack is made from a water resistant 600 denier polyester and has reinforced back and bottom panels, so it not only looks awesome but keeps your stuff safe and secure. And finally, if all that wasn"t enough the Mojo supply all their backpacks with a limited lifetime manufacturer"s warranty. So you can part with your hard earned safe in the knowledge that you"re covered for any unexpected problems.