The Ultimate Performance UP reflective race vest is brilliant for those winter runs. Its high visibility, 500 candlepower reflectivity means you can bee seen easily throughout you runs even in those darkest of nights. The race vest is made of 100% nylon mesh making it breathable, super lightweight and allowing full freedom of movement! With reflective tape of 3Mth scotchlite you are highly visible. Stay safe with this brilliant reflective race vest.