This is an adidas running t-shirt. The size is M. There is some fading and staining on the adidas marks on the neck and shoulders. The front of the shirt is designed to be opaque even when you sweat (photo 4), and the back is breathable and slightly see-through (photo 5). This is a used item, so please understand that it is sold as-is (3N - no returns, no refunds, no exchanges). #adidas #adidas #running #runningTshirt #trackandfield #marathon