This set gives you the best of both polished and ridged cooking surfaces. Designed with the optimal thickness for a balance of excellent heat retention and even distribution, making sure they're still durable enough for high-heat searing and grilling. The result is that they're compatible with all heat sources (even ovens, grills, and open flames) and built to last a lifetime. This gift includes the cast iron skillet, grill pan, and universal lid. The grill pan doubles as a lid as well.