This is a very cool Nike short-sleeved T-shirt! It's an unusual green color, so I didn't see anyone else wearing it. It's Dri-FIT. Size is M. 145 (See photo 5). There's a stain if you look closely, but I don't think it's as noticeable as in the photo. The armpits and shoulders are mesh. The fabric is not cheap and flimsy, but sturdy. NIKE Short sleeve T-shirt Short-sleeved shirt dry fit Dri-FIT Quick-drying Sports Soccer Boys