SealSkinz. Seal Skinz make a range of waterproof clothing accessories to help keep your dry and comfortable when you are out enjoying the great outdoors. SealSkinz make waterproof socks, waterproof gloves and waterproof hats. They make specialist mountain biking gloves and horse riding gloves. They make insulated gloves for cold weather use, and flip-mits for when you need your fingers for detailed work.