[Easy to color]The blank coasters made of denser Spandex cloth, smooth in surface and fine in Press, which can easily print photos on the surface. Vivid colors and clear pattern will be completely transferred. It's easy for Heat Transfer Sticker. [Non-slip Rubber Base]The back is dense shading natural rubber, which features anti-skid texture, it can firmly grip the desktop and perfectly hold your cups. Fits all type of surface incuding wood, glass, marble, metal and more. Not easy to slide when bumping on the road or putting on the smooth desktop. [DIY gift idea]You can leave your and meaningful designs on the sublimation blank coasters created into warm and considerate gifts,send them to your family,friends on occasions like Valentine's Day, Christmas, Thanksgiving, Halloween, Wedding, Birthday parties and another festive celebrations. [Use Note]Sublimation coasters can withstand transfer machine temperatures from approximately 356F or 180C to 428F or 220C, time is approximately from 25 seconds to 60 seconds. For different heat presses, the time and temperature will be different. Please adjust according to the actual situation. size: Diameter 7cm, thickness 3mm Material:Neoprene colour:Black and white Package Contents: 1 set x sublimation earring blanks Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.