Atsko Atsko was formed to develop new markets for Sno-Seal, the original beeswax waterproofing for shoes and clothing. Sno-Seal was created in 1933 to preserve and protect leather ski boots. When plastic ski boots replaced leather, Atsko introduced Sno-Seal for more general applications. They stand behind the idea that products that can perform under the toughest pressure will do a superior job in more ordinary applications. Over the past twenty years they have created new products for extreme challenges. These specialty products outperform typical household brands and give better results for less money while adding additional benefits.