PU Leather Round Mug Coaster (9.5cm) for sublimation printing These PU leather mug coasters are heat-insulated, which can better protect your dining table. The back side of coaster is smooth, and it will not leave any scratches on your table surface. Measuring 9.5cm in diameter, the coaster can perfectly hold your mug on the table. Size: φ 9.5cm Printing area φ 9.5 cm