The Paderno World Cuisine set of 6 placemats are made of 50 percent polyester and 50 percent PVC. These mats are woven silver and look very sleek and sophisticated on any table. They are easy to clean and should be wiped down with a damp cloth. They are extremely durable and go well with a wide range of dishes and styles. These placemats should never be heated in any way. Each placemat measures 16 1/2 inch by 13 inch .