Sublimation is a great professional way to personalize shirts, coasters, puzzles, mousepads and more. It is similar to heat transfer, however it is a process where the image becomes an actual part of the item. Sublimation uses special paper, ink and polyester-coated items that all react with each other. When heated to high temperatures, sublimation ink turns into a gas and the pores of the polyester coated item open up allowing the gas to enter. Then, once removed from the heat the pores of the polyester item close up trapping the ink inside of the item. Sublimation items are smooth to the touch. You won't be able to feel any image outline if you run your fingers across the sublimated item. The color is so much more vibrant than the inkjet heat transfer paper.