You can't go wrong with this unique set of coasters that combine style and function. They look great when not in use, but will protect your surfaces from dastardly water rings. Each coaster has a non-slip cork bottom. Sold as a set of four. The coasters are made of plastic and cork, and are approximately 3.5" (8.9cm) x 3.5" (8.9cm) x 0.2" (0.5cm) in size. OFFICIALLY LICENSED: NHL products sold by Graphics and More high quality and officially licensed. Proudly printed in the USA. A Graphics and More product. About The Product: You can't go wrong with this unique set of coasters that combine style and function. They look great when not in use, but will protect your surfaces from dastardly water rings. Each coaster is made from plastic, has a non-slip cork bottom, and is approximately 3.5" (8.9cm) x 3.5" (8.9cm) x 0.2" (0.5cm) in size. Sold as a set of four. About The Design: The Edmonton Oilers are a professional ice hockey team based in Edmonton, Alberta. They are members of the Pacific Division of the Western Conference of the National Hockey League. The Oilers were officially founded in 1971 and played its first season the following year in 1972.