This is a half-zip undershirt from ARC'TERYX for outdoor use. It's not a compression type like Under Armour, but rather has a fluffy fabric feel. This is from the era when the Japanese distributor was Sunwest. It hasn't been worn much, so there's no damage, but the yellow logo on the left sleeve has cracked due to aging. Please check the photos for the condition before bidding. Measurements (flat lay): Length 63cm, Width 43cm. - Brand: ARC'TERYX - Color: Black - Design: Half-zip - Intended Use: Outdoor wear Thank you for looking.