Knit Cap, Style Roll Up Hat, Includes Lining Yes, Lining Material Polyester, Areas Covered Head, Adjustment Type Stretch Knit, Material Acrylic, Color Black, Maximum Hat Size 9.25, Length 8 1/2 in, Size Universal, Cleaning and Care Instructions Machine Wash, Features Advanced Insulating Yarn, Fine Rib Construction, Gender Men’s, Insulated for Cold Conditions Yes, Series HNMX