Purple butterflies have become internationally recognized as the symbol for Chronic Pain Disorders such as Fibromyalgia, Lupus, and other invisible illnesses
This round rubber coaster is made of a durable heat-resistant polyester fabric top, backed with a neoprene rubber non-slip backing, keeps things from sliding. It measures 3.5" in diameter, 1/8" thick. It will not discolor or fade, machine washable.