Multi Size & Propose! Silicone baking mats have 7 pieces: 2 x Half-Sheet Size Baking Mats (16.5” x 11 5/8”) 1 x Large Pastry Mat(23.6”x15.7”) 1 x Quarter-Sheet Size Cooking Mat (11.5” x 8.5”) 1 x Round Size Cake/pizza Pan Mat (8.5 " ) 1 x Square Size Cake Pan Mat (8 5/8" x 8 5/8") 1 x Silicone Dutch Bread Mat(Dia 8.3”x 21”)- Mat thickness is 0.75 mm (approx. ).