Comfortable 100% cotton running shirt, GQ-1 model, size L. - Brand: GUNZE - Product Name: Running Shirt - Size: L - Material: 100% Cotton - Model: GQ-1 - Features: Comfortable Design Unopened, and I checked it with the naked eye, but I didn't see any stains. However, as this is underwear, returns are not accepted, so please refrain from purchasing if you are concerned.