This is an innerwear item with UV cut function purchased from a golf shop. The body and back sections are made of sheer mesh fabric, providing good breathability and excellent UV protection. It is designed to be worn layered under a short-sleeved polo shirt, with only the sleeves showing. It's a stylish and functional undergarment. It has been worn a few times but has been stored at home. Please refrain from purchasing if you are sensitive about such details.