No more greasing and flouring first. Flexible, nonstick silicone offers instant, easy release without the use of grease. Nonabsorbent silicone keeps moisture in your food and won’t retain odors. Allows even heat distribution. Can be used in either a traditional oven or microwave at temperatures up to 445°F/230°C. Set includes two 9” diameter round, two 8” x 8” square, and two 9” x 5-1/4” rectangle. Dishwasher safe.