1. What you get :6 non-slip silicone coasters (round), 6 absorbent felt inserts (round). Silicone coasters can be used alone or with inserts. 2. Why use absorbent inserts in coasters: Cold drinks often sweat and moisture collects on silicone coasters. When you pick up the cup, some of the moisture will drip onto your clothes or furniture. However, the inserts absorb this moisture and prevent dripping. Felt inserts do not stick to the glass or cup, nor do they rise with the cup. 3. Non-slip and non-stick; The silicone pad will not slip or slide or scratch the table top. 4. Easy to clean: Silicone coasters and liners are dishwasher safe, but they can be hand washed and air dried if you prefer. 5. Best housewarming/wedding gift choice: Minbu bamboo coaster is the best choice for housewarming, birthdays and any occasion. Suitable for weddings, Christmas, birthdays, restaurants or friends who have just bought a house Product Description: CoasterMaterial: Silica gel + felt clothColor:Black + Black;Brown + Brown;Wine red + dark blueSize: 10*10* 0.5cmPacking contents: 6 pieces