This is a Nike running shirt. It's made of a lightweight, quick-drying, and breathable material! Size: Men's M Color: Purple Condition: Worn 3 times, like new 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 (relay race) Marathon Uniform Singlet Aeroswift