Hoggs of fife - Knitted Beanie Hat - Thinsulate Micro fleece warm Beanie. Featuring a microfleece lining and a waterproof (Green is waterproof Black is not). breathable membrane, this Thinsulate beanie will give exceptional insulation from a relatively thin fabric and can wick away the moisture to keep you comfortable, when out in the cold. Its classic good looks are a handy additional benefit, too! FIELD PRO THINSULATE WATERPROOF BEANIE Outer: 100% Acrylic Lining: 3M Thinsulate (Polypropylene 65% Polyester 35%) H-Tex membrane Waterproof/breathable Field Pro and Thinsulate branded woven tabs Machine washable at 40°C HOGGS PROFESSIONAL THINS Olive version is Waterproof, Black is not. Hoggs of fife - Knitted Beanie Hat - Thinsulate Micro fleece warm Beanie