The rack lifts food above the bottom of the pan to help prevent sticking or burning and allows fat and grease to drain for healthier cooking (no more soggy bottoms!). The open design promotes air circulation for fast, even roasting of roasts, poultry, fish, bacon and vegetables. The silicone construction also makes it perfect for use as a trivet, while also being a breeze to clean. Use this set of two separately, side by side in the same pan, or stacked for extra elevation. Microwave and dishwasher safe.