High-quality silicone, safety, high Flexible, full transparency, Super easy to de-mold | The mold is used to create square coaster, beverage coaster, bowl mat etc, Mold is reusable | There are not super soft, the bottom of the middle is not easy to bend | The size of the three shapes of coasters is shown in Figure 5. Need 3.4 oz of resin to fill Square mold, Need 3 oz of resin to fill Hexagon mold, Need 3.1 oz of resin to fill Round mold | Please do not use Strong Corrosive Material, which will shorten the life of the coaster, and even lead to the failure to demould and damage the mold.