These are modern looking, slick, lightweight and convenient.The leather definitely grips glassware and plastick cups well. They are a simple design and match almost everything. They don't slide around on the tables, and will not scratch the furniture. You can clean and dry these, not having to worry about mold. Design catches any sweat from the glass or cup. Sometimes,They do stick to the bottom of perspiring cups, but very classy leather look to match the black & brown leather furniture you have. Also match all the stainless steal appliances in your kitchen which is a plus. Sturdy and durable;MDF structure covered by high quality PU faux leather suitable for office and home. Simple and elegant design . Perfect to hold glass/goblet etc in an effective way. Unique design , convenience to carry and meet you need. Ideal for any home, nightstand, restaurant, bar, car, desk, boat, motor-van travel;completely. great for hot and cold drinks, tea, coffee, beer, wine, water, juice, milkshake, and more. Specifications: Item Size: 4 inches Square. Material: exterior: PU leather;frame: MDF. Package Include:1 x PU Leather Coaster Holder ;6 x Coasters.Note: Do not put in microwave, oven, dishwasher, freezer or above a direct heat source.