[Good Material and Size] This sublimation coaster is made of MDF material, size: 3.86x3.86 inches (10x10cm), thickness is 4mm There is a protective film on the of the coating, which can protect the printing coating, so that your coating is more protected and the printing image is clearer Pressing time: 60-70 seconds Pressing temperature: 355-375F (180-190C) Use sublimation ink, sublimation paper and heat press.