Come and see our amazing products. The drink coasters are made of food grade silicone, Flexible and Durable. The bottom of our coaster is designed with a special high slip resistance surface to ensure a great table grip. The deep hem design can hold more overflow of water, juice and liquor from the cup. The size suits all normal cups or mugs. The coaster can be used for cold or hot drinks in any occasion. The thickening size is 4" x 4" x 1/4". The price includes the shipping cost to ca. QTY for 20000pcs and over by ocean.100% quality assurance. Pls confirm with us about the packing info, stock color and exact production time before placing your order.