New, unused men's Heattech short-sleeved shirt, size S. I was looking for a short-sleeved undershirt for women that wouldn't show lines, but I couldn't find any, so I bought several men's shirts. This item is unopened, but upon closer inspection, there's a slight cut mark where someone tried to open the top. It's good for wearing under a white shirt. The size details are in the third photo, so please take a look. Shipping will be folded to fit a Yu-Packet Post Mini envelope. Thank you.