Carhartt brown knit balaclava Men's insulated face mask On brutally cold days the work still has to get done. This men's face mask is made of soft acrylic rib-knit fabric and is insulated for more warmth. The extra-long neck provides additional weather protection. Features 100% acrylic stretchable rib-knit fabric 65% polyethylene, 35% polyester Thinsulate® Flex 40-gram insulation Overlock stitching around eye opening Long neck Carhartt label sewn on front