Our sublimaton blank coasters is made from 5MM thickness neoprene with Non-slip bottom,which is soft and elastic,and covered with customized high-density fabric,so that you can sublimate well with vibrant color. The sublimation coasters blanks covered with thermal transfer fabric,you can use transfer machine temperature is about 356°F/180°C to 428°F/220°C, time is about 20-60 seconds,kindly please adjust the temperature and time according to the different heat presses. These blank sublimation coasters is for DIY crafts,ou can take pictures with your family,lovers,beautiful natural scenery,inspiring photos,help you to keep the greateset moment,and as a meaningful gifts to give your family,friends,thanksgiving,birthday,etc. Our heat transfer sublimation coasters is suitable for many occasions,can be used in your home,kitchen,office,bedroom,living room,cafes,hotels,bars,etc,to hold coffee tea cups,glasses,bottles,drinks. You'll get 20 pieces neoprene square blank coasters with 5mm thickness,and a size of 3.5 x 3.5 inches. Color: White Material: Neoprene Package Contents: 1 set x sublimation coasters Only the above package content, other products are not included. Note: Light reflection 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.