Since the 19th Century, hardworking men, rowers, soldiers, loggers, and hunters alike, have relied on thermal undershirts as essential cold weather gear. Our heavyweight double-layer Henley carries on this tradition with its chill stopping dual-layer material construction, designed to block cold and damp conditions while locking in warmth. Thick enough to be worn on its own or as a base layer. Big and Tall sizes are designed for men over 6'2"" and add 2 inches in body length and 1-1 2 inches in sleeve length.