Rolling collapsible cooler with speaker system. Large insulated rolling cooler has its own built-in speakers and amplifier as well as a connector for your MP3 or CD audio player. Fully insulated large main compartment and 2 outer side pockets for storing accessories. Entire bag collapses flat and secures for easy storage. Telescopic handle and easy glide wheels. Uses one 9V battery (not included). Made of 600D polyester.