Knitted Cap Grey Insulated microfibre lining Windproof Portwest Knitted Cap Insulatex Lined - Grey | B013grr This high-performance cold-weather hat has a specially insulated Microfibre lining for extra warmth retention. Fine knit acrylic fabric that is windproof and extremely comfortable to wear. Features Inner soft Insulatex lining offering warmth and comfort Outer acrylic knit fabric Knit gauge 9 for shape retention Material Shell Fabric : 100% Acrylic, Knit Lining Fabric : Insulatex Lining 40g