Nikwax Glove Proof extends the performance life of all leather and fabric combination gloves. It adds water repellency, and maintains breathability and grip. Glove Proof, is water based, biodegradable, non-flammable, contains no harmful solvents and is free of volatile organic compounds (VOCs) and fluorocarbons/PFCs. Ideal for gloves with breathable membranes, e.g. Gore-Tex.