Featured Material: The DIY Sublimation Coaster is made of 5mm thick neoprene material with thermal transfer layer and natural rubber base for a firm grip on the tabletop to prevent slipping. The soft material absorbs condensation from the cups, no more puddles on the tabletop. Versatile Use: Heat sublimation coasters can be used in kitchens, bedrooms, cafes, etc., to hold coffee cups, wine glasses, teacups and glass bottles. DIY Gift: You can leave meaningful and designs on blank sublimation coasters and give them to your family and friends on festival, Thanksgiving, birthday parties, etc.. Thermal Transfer Process: Can print any personalized picture on white polyester fabric with thermal transfer layer; Pressing temperature: 180-190°C (356-374°F) Pressing time: 40-70 seconds. Temperature and time can be adjusted according to the actual situation. Package includes 50 Pcs blank sublimation square coasters, product size: about 4 x4 inches, thickness: 5mm.