Ergodyne N-Ferno 6823 Winter Balaclava Ski Mask, Wind-Resistant Face Mask, Thermal Fleece, Black WIND-RESISTANT Wind-protectant fabric paneling over vulnerable areas to protect against a variety of nature's elements BREATHE EASY Mesh panel over mouth directs exhaled breath out to help prevent fogging of glasses or sunglasses FULL COVERAGE WARMTH Long length covers face, nose, mouth, and neck while maintaining breathability VERSATILE Functional hood with a hinge design that can be worn in a variety of ways from ski mask to neck gaiter ONE SIZE FITS MOST Stretchable to fit most heads to provide the ultimate winter protection LIGHTWEIGHT Comfortably fits under a helmet or hard hat without feeling too bulky