The Klein Tools Neck and Face Warming Band, No. 60455, features two layers of fabric for protection. It's fleece lined on the inside layer for extra warmth in cold weather and the outside layer has moisture wicking knit fabric with anti-odor treatment for freshness. The warming band offers a secure fit and won't unravel with sewn elastic edges. It measures 20" in length and has reflective accents. One size fits most.