The specially textured Unison Sear Nonstick surface on this Calphalon roaster with nonstick V rack seals in flavor. The triple-riveted stay-cool handles make lifting and turning easy, and oven-to-stovetop versatility is perfect for making gravy. All hard-anodized aluminum roasters are safe for use on stovetops with gas, electric-coil burner and ceramic/glass cook tops Warranty Information. Hard anodized aluminum. Dishwasher safe. 16", Accommodates up to a 25 lb. Turkey. Oven safe to 500 degrees. Lifetime warranty.