Unique Pattern Design: The different patterns help you make different baked foods more easily and bake the style that you want. Each stylish package contains 4 pieces of silicone baking mats to meet your different size needs, 2 pieces in 42 x 29.5 cm (16.5 x 11.6 inch) for half-sheet size baking pans, and 2 pieces in 29.5 x 21.5 cm (11.6 x 8.5 inch) for quarter-sheet size pan oven. Perfect for a gift to your friends. Best Quality: These kitchen baking accessories can be used at temperature ranging from -40F up to 450f (-40 to 230C). They are made from BPA free food grade silicone and reinforced with fiberglass, which is FDA and LFGB certified approved. Oven, microwave, dishwasher and freezer safe. And the 0.75mm thickness is thicker than other 0.4mm baking mats on the market, which make our kitchen mats more durable.