This is a Nike Aeroswift running shirt. It's made of a lightweight, quick-drying, and breathable material! Size: Men's S Condition: Worn 5 times. No noticeable scratches or stains. I think it can be used for track and field, marathons, ekiden (relay races), running, and various training sessions. If you have any questions, please comment. Thank you. Running shirt Running shirt Full marathon Oregon Project Track and field Track and field Tank top Ekiden Marathon Uniform Singlet Aeroswift