1. Surface protection-Natural stone coasters can prevent scratches and stains on fragile surfaces and are heat-resistant. The glass coaster set is stored in a bamboo frame. 2. Easy maintenance-The special seal of slate plates can protect them, prevent traces and make the slate coasters easier to clean. No post-treatment of oil is needed. 3. Anti-skid-the stone coaster (10cm, square and small) is anti-skid, thanks to its four soft rubber feet. 4. Personalized slate roller coaster-mark coasters with names, or surprise your loved ones with personal information. Slate decoration is washable. 5. Multifunctional-coasters can be used as, for example, coasters for drinks, coasters for buffet decoration, coasters for cheese board burning or coasters for candles.