Silicone mat resistant to temperatures from -76 to 446F (-60 to 230C). 15-3/4 inch x 23-5/8 inch x 1/16 inch high (400mm x 600mm x 1.5mm high). 70 circles with ridges along their diameters to contain the macaroon batter. Each circle 1-9/16 inch (40mm).