Material: Polyester, olefin, cotton, rayon. 4-pc set of 4" round coasters. 3/8" thick. Heat-resistance of 400 ºF. Care Instruction: Spot Clean. Dual color corded design in current and trendy colors bring a modern look. Provide protection to the table. As the item is braided, the shape might not be a perfect oval or round, which is the nature of the product. This 3/8" thick woven fabric braided product line offers various uses. This is 4-pc set of 4" round coasters. It is made of polyester, olefin, cotton, rayon. They are heat-resistance of 400 ºF. Care Instruction: Spot Clean. The color is current and trendy. As the item is braided, the shape might not be a perfect oval or round, which is the nature of the product.