For an extra layer when the temperatures drop, wear the Gear For Sports Colorado Buffaloes Comfort Wash Willie Crew. With Colorado Buffaloes colors and graphics, you'll be able to show off your team pride throughout the entire season and year. Made with soft fabric, you'll stay comfortable throughout the whole game in the Gear For Sports Colorado Buffaloes Comfort Wash Willie Crew.Fabric Content:80% cotton, 20% polyester