When we have a cold drink, the glass leaves a ring mark on the furniture, it could be your dining table, coffee table, side table or benches, or even the kitchen counters. As condensation forms on the outside area of cold beverages, the bottom of glasses often forms a ring of water. This not only looks bad but eventually damages your expensive furniture. Especially good quality expensive furniture is bound to get more affected by water rings in the absence of coasters. To maintain the durability of your furniture, coasters come very handy!