JAMIE OLIVER Baking Sheet, Nonstick 14 x 10 Inch flat baking tray with raised lip for easily removing from oven Insulated two layer design prevents hot spots by allowing air pocket between layers for even heat distribution Two layers of durable, nonstick Quantum II coating on top and Xylan coating on bottom keeps food from sticking Heavy-gauge 0.6mm carbon steel construction prevents warping even at high temperatures up to 475 degrees F 25 Year Jamie Oliver Guarantee - Hand wash Recommended