This is thick underwear. It's short-sleeved and feels thick. The size is labeled as 150, but it feels small? I think it might fit more like a 130-140. I'll list it as a 130 just in case. It's unused and has been stored for a long time, so I washed it before listing it. I'm not sure if it was like this from the beginning or if it's because I washed it, but the hem stitching on the back is visible. Please check the images. It's not unraveling, so I don't think it will affect wear. Please refrain from purchasing if you are sensitive to used items. It's thick, so I will compress it for shipping.