The CamelBak Thermobak AB was designed to hydrate the warfighter operating in tactical body armor. The Thermobak AB combines the features of the best-selling thermobak series as well as the new Armorbak models. Basically, the Thermobak AB can be worn with the shoulder straps like a standard CamelBak but also includes their proprietary Direct Armor Attachment System (D.A.A.S.) which allows it to interface with the IOTV and MTV currently in service with the US Military.
The Thermobak AB utilizes CamelBak's 102 oz low profile OMEGA Water Beast Reservoir which carries over three liters.