These mats are made of silicone, and practical. You can safely use it for food preparation. Heat resistant and anti-slip design make the cup coaster more practical and attractive to people. So it can prolong your table service life. Features - ColorAssorted Color - Material: Silicone. - Size: 9.80X9.80X0.50cm/3.85X3.85X0.20inch. - The coaster is made of food-grade silicone material, which is flexible and elastic, not easy to deform, and has good resilience. - The surrounding area is designed with anti-overflow edge, which can prevent water droplet from overflowing and the tabletop is . - The bright surface treatment of the back mirror makes the coaster more slip-resistant and not easy to slide firmly on the table. - Creative luminous design, after the coaster absorbs natural light, it will automatically give out a pale green . - Perfect size for holding coffee cups, kids' drinks, sports bottles, craft cocktails and tumblers. Package list: 12 x Coasters