Protect Your Tabletop: the drink coasters are mainly made of quality silicone, which is safe and reliable, strong and sturdy, can avoid hot water, tea or coffee stains from hurting your desk, so you can enjoy your favorite alcohol, fruit juice or other beverages UNMATCHED NON-SLIP & NON-STICK DESIGN - Double-sided design, available on both sides. The cup coasters for drinks are made of food grade silicone. pattern holds liquid to prevent leaking and prevent coaster from sticking to glassware. With these coasters you'll glass stay put on the table as the bottom of our coaster is designed with a special high slip resistance to ensu Suitable Size: the coasters for coffee table are about 4 x 0.2 inches, with the size of 4.6 x 2.75 inches holder, suitable for most kinds of cups, and convenient to store when not in use, without taking up much space LONG-TERM USE & HEAT & DISHWASHER AVAILABLE: Dishwasher-safe, highly stain-, waterproof, heat . Wooden coasters can be used for cold or hot drinks in any occasion. You can enjoy your favorite alcohol, liquor, fruit juice or other beverage, like beer, wine, whiskey, tropical cocktail, ice water, coke soft drink, coffee, tea or hot chocolate. That's one of the ways we help you protect your precious tables. What You Can Get: the package content contains 40 pieces of drink coasters for tabletop protection in gray and black and 4 holder, sufficient quantities and classic colors can support your use and replacement needs Colour:black+grey Material:Silica gel Size:10cm Package Contents: 40 x Coasters 4 x Storage rack Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.