Workman's Heat Assist series, a shirt with an aluminum backing. There is no peeling of the aluminum or any significant stains or damage, and the overall condition is good. Recommended for cold protection, work, and outdoor activities in the coming season. 【Size】 L size 【Color】 Black 【Condition】 Used (no aluminum peeling, etc.) ※Please note that there may be minor oversights due to the item being used. If you have any concerns, please feel free to comment.