Portwest Knitted Cap Insulatex Lined - Black | B013BKR Inner soft Insulatex lining offering warmth and comfort Outer acrylic knit fabric Knit gauge 9 for shape retention Available in an excellent choice of corporate colours Shell Fabric : 100% Acrylic, Knit Lining Fabric : Insulatex Lining 40g Portwest Knitted Cap Insulatex Lined - Black | B013BKRThis 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.