MATERIAL - these round coaster molds are made out of flexible, sturdy and durable silicone, which makes it easy to release and clean up with soap and water MEASUREMENTS: the big coaster mold measures 8 x 8 x 1.5cm/ 3.15 x 15 x 0.60inch, perfect size for making your unique resin coasters DESIGNED WITH A LIP ON THE MOLDS - the round resin silicone molds have a lip on to keep beverage spills, drips, condensation, etc. from running off the coaster, hold the glasses in place, which is very WIDE RANGE OF APPLICATION - the resin casting mold is very versatile in usage! Perfect mold for epoxy resin coasters, small flower pot base, conceret, plaster, cement and polymer clay etc; use this mold to make unique handicraft gifts for your loved ones and that they will love 4 pack round silicone molds for coasters, great molds for your different diy craft projects, material allows for your sustainable use colour:clear white Material:Silica Package Contents: 4 x Silicone molds Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.