Made Of 600D Polyester. Gray PEVA Lining. Adjustable Shoulder Strap. Batteries Not Included. 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. 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.