sublimation transfer paper is a special type of paper used in the printing process known as sublimation. This paper is coated with a polymer that allows it to absorb dye when heated. When printed with a sublimation printer, the ink turns into gas and bonds with materials like polyester or polymer-coated surfaces, creating vibrant and durable images. The process involves printing a design onto the sublimation transfer paper, then applying heat and pressure using a heat press. This method is popular for creating custom items such as t-shirts, mugs, and phone cases, as it produces high-quality, long-lasting prints.