Sportwax is a natural product formulated to condition and proof leather. Apply it with a sponge or cloth and don’t forget the tongues of the boots. Rub the wax in well. There’s no need to heat it, as this could reduce boot breathability. Waxing changes the appearance of the leather, making it smoother and darker. Applying a little to the hooks and eyelets also protects them against corrosion.