WHAT'S IN THE BOX: Three carbon steel cookie sheets (13", 15" and 17"). NONSTICK MULTI-TASKER: Slim cookie sheet offers a nonstick surface that is both easy to grease and convenient to clean. Often used for but not limited to baking cookies, this sheet pan requires less oil or butter to release baked goods or roasted vegetables smoothly. QUICK HEAT RESPONSE: Carbon steel construction responds to heat quickly to conduct and distribute it for even baking and roasting. WIDE SURFACE AREA: A baking sheet as big as a traditional jelly roll pan, this pan allows roasting tender-crisp vegetables or baking fish and chicken. Suitable for baking or cooking sides, desserts or sheet-pan dinners, this pan is ideal for most standard home ovens. WARP-RESISTANT: Minimally raised edges and rolled rims resist warping to maintain the pan's shape after placing it under high temperature.