Bontrager's Funk Trunk has everything you need to put the party on wheels. Its packed with great features your friends will love like a thermo-lined main compartment to keep up to eight cans cold. Crank up the fun with the built in battery powered speakers and amplifier (batteries not included) that let you plug in to any music device with a 3.5mm headphone jack. 560 cubic-inches of cargo space and shock-cord top storage gives you plenty of room for all your gear. This awesome trunk bag attaches securely to a rear rack (not included) with two Velcro straps and has a removable, adjustable shoulder strap so you can take the party anywhere.