U.S. Armed Forces Stainless Steel FlasksHandy stainless steel flasks featuring the raised logos of the U.S. Armed Forces. Capacity is 8.0 oz. Makes a great present or just enjoy them yourself. Sorry folks: Only Army is available at present; Air Force, USN and USMC logo flasks are no longer offered due to licensing problems, but the Marines do license the stainless steel version seen in the flask section.