The Non-stick sheet is a must have item if you are doing heat transfer work. Use a non-stick  sheet with your heat transfer press to keep the upper heat platen clean and to prevent colors from bleeding through. To use, all you have to do is place the Non-stick sheet on top of the heat transfer. Non-stick sheet is re-useable . The Non-stick sheets are made of premium grade Non-stick and fiberglass materials. Heat rated up to 550 degrees F.