Size: 28.5cm x 20.8cm. Table mats and coasters are resistant to normal household stains and withstand temperatures up to 145 degrees centigrade. They are not suitable for use as chopping boards. We recommend that you clean placemats and coasters with a damp sponge and dry with a soft cloth. DO NOT immerse in water or put in a dishwasher. Manufactured by Castle Melamine