Sublimation ink, when heated, turns from a solid to a gas that embeds itself into the polyester fabric. When it cools, it goes back to a solid and becomes a permanent part of the fabric. This means that your transferred design adds no additional layer on top, so there's no difference in feeling between the printed image and the rest of the fabric. This also means that the transfer is incredibly durable, and under normal conditions, the images you produce will last as long as the product itself.