Mountain 600 4.5" SADDLE TANTo ensure its quality, we put our leather through six different tests before making our selection. Our full grain leathers are the strongest and most durable form of leather 100% waterproof barrier allows moisture to escape without letting water in, keeping your feet dry and comfortable all day long Because you can never have too many laces, this pair comes with an alternative color Three layers of varying density are combined for maximum cushioning