Aqua Seal 4 Oz ClassicChosen number one by many boot manufacturers and outdoor enthusiasts, Aquaseal waterproofing paste creme has proven itself reliable to waterproof and condition all types of leather. This unique product combines conditioning oils similar to those used by tanneries, extremely viscous silicone, and a blend of waxy substances. This achieves maximum waterproofing and conditioning, while retaining leather breathability and durability. Aquaseal is easy to