Otter Wax is used to make the canvas and other fabric you already love naturally waterproof. These waxes can be used for hats, jeans, jackets, tents and so much more. Otter Wax products are made from natural plant-based ingredients and humanely harvested beeswax and lanolin without sacrificing effectiveness. At Otter Wax we’ve always been passionately against animal testing. They never have, and never will use animals to test their products.