1.UPGRADE SHARP & DEEP TRAY DESIGN: will prevent any burns or freezing, at the same time, the deep hem design can hold more overflow of water, juice and liquor from the cup. Big size suits all normal cups or mugs, also enough for large mason jars, flask, tumbler or glassware like beer stein, bourbon glass, cola bottle and pitcher jug.2.NON-SLIP BOTTEM & NON-STICK TOP: Double-sided design, available on both sides. Grooved pattern holds liquid to prevent leaking, raised ripple promote air flow to prevent coaster from sticking to glassware. Relax and enjoy fun time with your family or friends at your house, indoor or outdoor; anywhere from the kitchen, bedroom, drawing room, ball room, wedding, party, library, restaurant, office, bar, pub and beach.3.MAXIMIZE FURNITURE PROTECTION: The indoor and outdoor patio absorbent coasters, can be used on any materials table type, like wood, granite, glass, bamboo plastic, soapstone, sandstone, marble, stone tables and so on. Smart protect the surface of your kitchen counter tabletop, office desk or bedside furniture from nasty marks or scary scratch.4.LONG-TERM USE & HEAT RESISTANT & DISHWASHER AVAILABLE: The drink coasters are made of food grade silicone,Flexible & Durable. Heat resistant range from -40F to 480F, can be used for cold or hot drinks in any occasion. 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.5.MUTI USE & OFFERS: Those versatile drinking coasters can be used as small trivet, pot holder, spoon rest, kitchen table pad, even the furniture feet floor cup for chairs and tables at home , also will be a professional bartender supplies, barware tabletop set, bar absorbing mat at bar.