· DURABLE AND LONG-LASTING: Cookie sheets for baking nonstick set is made of engineered carbon steel metal alloy attractive, goldish metallic coating for stability, even heat distribution, and durability for years. It is oven safe of up to 450°F(230°C) and prevents warping after repeated use to last a lifetime · MICRO-TEXTURED BAKING SHEETS: 3 piece cookie sheets set includes 1pc 9x13in small cookie sheet for baking cookies, pastry, and lasagna, 1pc 10x15in jelly roll pan for baking jelly rolls, 1pc 12x17.5in large half sheet for baking chicken and vegetables. Just one can easily satisfy your daily baking needs and help you take your baking to the next level · HEALTHIER NONSTICK TECHNOLOGY: Baking sheets for oven feaures a premium nonstick coating layer and a protective layer, chemical-free – PFOA, BPA and PTFE, resists scratch and rust,ensure food perfect release. · RIMMED BORDER: These cookie sheets nonstick baking sheet set features fully rimmed border that prevents parchment paper from sliding out and juices/sauces from spilling while providing ample airflow and heat distribution for even baking/cooking · EASY TO CLEAN: Nonstick surface inside and out,makes rectangle cookie sheets for oven easy to clean, hand wash is recommended. Smooth rolled edge,oblong shape with high side for rimmed cookie sheets,add sturdy.