A lightweight, three layer waterproof knitted beanie is comfortable and insulated. Ideal for use everyday or adventuring in cold weather conditions. For over 25 years Sealskinz has been innovating and perfecting waterproof socks, waterproof gloves and waterproof hats in Kingâs Lynn. Our outdoor accessories are thoughtfully designed, made using premium materials and are carefully crafted to keep you dry and warm. All of our products are backed by our Lifetime Waterproof Guarantee. When we say waterproof, we mean waterproof.