Nikwax Footwear Cleaning Gel - Used on nubuck, suede and smooth leather as well as fabric and leather combination leather. Ideal for leather clothing, luggage, boots, riding tack and motorcycle leathers. Solvent free. Revives dried out old leather. Safe to use on footwear with waterproof breathable linings and waterproof leathers. Keeps "waterproof" leather at its optimum performance level.