Made Of 600D Polyester | PEVA Lining | Adjustable Shoulder Strap | Zippered Front Pocket With 2 Bluetooth Speakers | Double Zippered Main Compartment | Top Pocket | Side Mesh Pocket | Holds Up To 12 Cans | Wireless Speakers Featuring High Definition Bluetooth® 4.1 Technology | Simply Pair Your Device To Enjoy Dynamic Stereo Sound | 3 Replaceable AA Batteries | Output: 5 Volts/1.8 Amp | Pairs From Up To 30 Feet Away | Up To 1.5 Hours Of Play Time | Spot Clean/Air Dry