Black Silicone Coasters With Soft Felt Insert, Absorbent Coasters For Drinks WHAT YOU GET: 6 non-slip silicone drink coasters(round, black, 4.3 inch), 6 absorbent felt inserts(round, black) and a 4.5-inch metal holder(black). The silicone coasters can be used alone, or with the inserts. WHY USE ABSORBENT INSERTS IN THE COASTERS: Iced drinks often sweat, with the moisture collecting on the silicone coaster. When you pick up the glass, some of this moisture drips on your clothes or furniture. However, the inserts absorb this moisture and prevent dripping. The felt inserts do not stick to and lift with the glass or cup. NON-SLIP AND NON-STICK; GREAT PRICE: The high quality silicone coasters will not slip or slide or scratch the table top. We have priced the set so not much more expensive than silicone coasters alone. TOP GRADE QUALITY IRON HOLDER; CONVENIENT STORAGE: put your coasters directly into the metal holder to make your home tidier. Square and round coasters can placed in this holder. EASY TO CLEAN: Both the silicone coasters and inserts are dishwasher safe, but they can be hand washed and air dried if you prefer.