Water-shedding, rugged and full of character, waxed cotton easily earns the title of the first performance fabric. Keep it working good as new with Otter Wax Heavy Duty Fabric Wax. Made of high-quality beeswax and other plant-based waxes and oils, it's the only water-repellent wax that doesn't use petroleum-based synthetic ingredients. Just rubbing the bar across your well-worn hat or waxed cotton jacket to create the perfect amount of heat to treat the surface with an even layer of wax. You can even use it to waterproof fabrics that haven't previously been treated – fix up your backpack, jeans, tent, anything you want to keep bone dry.