ZETT Prostatus Long Sleeve High Neck Undershirt Color: Black Size: L Product Number: BPRO888Z I received this as a new item and wore it a few times, but I'm selling it because I don't have a chance to wear it. It's in good condition, but please understand that it is a used item before considering purchasing it. Below is the manufacturer's product description. Features of the Physical Control Wear Prostatus BPRO888Z series: ① Enhances shoulder blade movement from the shoulder ② Improves breathability in the underarm area, which tends to sweat ③ Natural compression and a 3D pattern that makes it easy to move from the arm to the shoulder ④ Eliminates the step of the fabric at the seams, reducing skin irritation Sleeve Length: Long Sleeve Gender: Men