There are various types of leather used in upholstery, rug borders, clothing, airplane and car seats and other items. The most common is Protected/Pigmented/Top Grained, or Top Coated Leather. This is the most durable and easiest to care for. It has a very thin coating over the surface, which seals the leather and prevents water or liquids from soaking into the leather. If a small droplet of water is placed onto the surface of the leather, it will immediately "bead up". This method will quickly identify Top Grained Leather.