FXR Shredder Frostbite Block Balaclava, BLK/CHARCOAL, LG Features: FXR Proprietary 4-Way Stretch Mapped Wind-Stop System Ultra Lightweight Brushed Inner, Polyester-Spandex Fabrication Designed For Use With FXR Cold Stop Anti-Fog, Mask Or Any Helmet With Breath Box Blocks Wind To Dramatically Reduces Frostbite Risk Due To Exposure In The Critical Collar To Helmet Gap Allows 100 Percent Breathability At The Top Of The Head