Precision 2nd Skin is great practice skin for beginners to use to practice tattooing, and it's also an excellent tattoo practice skin for advanced tattoo artists who want to try out new tattooing techniques, test new tattoo machines or inks, or just display their artwork in their shops and at conventions. 2nd skin is made from silicone, and it's very similar to that of human skin, so you can test out advanced tattooing skills without having to practice on yourself, friends or family members. There's absolutely no comparison between 2nd Skin and lesser substitutes like pig skin and tattooable fruits like grapefruits and oranges!