Coaster diameter 4inch, suitable for all glasses, mug, cup. Easy to clean, just rinse it by water. Dishwasher safe, they are perfect for hot and cold drinks, side tables, bed stands, bars. Protect your dining table, furniture or kitchen countertops from stain or damage. These holds hot coffee as well as cold drinks to prevent leaking. Free to bend, also works as a bar service mat, jar opener, a trivet for hot pans, cup cover, soap dispenser pad. Buy it as a gift for housewarming, birthday, Christmas, father’s day, mother’s day, small wedding for friends or family.