Durable and stylish backpack with a built in battery to charge your devices * Charge your iPhone, Android Smartphone & Tablets * Charges up to 3 devices at once * 10,400 mAh removable battery can give a Smartphone 4 full charges or a tablet 1 full charge * Over 1,450 cubic inches of space w/ 13 Pockets plus a 110 cubic inch accessory bag included