EXTREME COLD WEATHER POLYPROPYLENE UNDERSHIRT.100% POLYPROPYLENE MOISTURE WICKING MATERIAL HELPS TO KEEP YOU DRY WHEN YOU SWEAT AND STILL REMAIN WARM. ELASTIC SLEEVE CUFFS. CREW NECK. SIZE IS A MEDIUM. MEASUREMENTS ARE ARM PIT TO ARM PIT IS 21″ INCHES. TOP OF FRONT COLLAR TO BOTTOM HEM IS 23″ INCHES. BROWN IN COLOR. ALL SHIRTS ARE NEW IN BAGS. CHECK OUT EBAY STORE FOR MORE MILITARY SURPLUS.