Mauviel M 'Heritage M150B Copper Cookware combines two efficient materials that are perfect for cooking and table presentation. The 100% Copper body is 1.5mm thick and is bonded to a very thin stainless interior. Copper offers superior heat conductivity. Stainless Steel interior is hard wearing, non-reactive and ideal for all types of cooking activities, is easy to clean and very durable. Mauviel M 'Heritage M150B has straight sides and substantial bronze handles that are firmly riveted to the body with stainless steel rivets. The handles are traditional and offer excellent balance. Made in France. All Mauviel products are guaranteed for life against any manufacturing defects for household use. Mauviel, a French family business established in 1830 and located in the Normandy town of Villedieu-les-Poeles, is the foremost manufacturer of professional copper cookware in the world today. Highly regarded in the professional world, with over 170-Year of experience, Mauviel offers several different lines of copper cookware to professional chefs and home cooks that appreciate the benefits of their high quality products. Professional cooks can attest that copper cookware is an essential part of every cookware collection as it is 2X more conductive than aluminum and 10X more conductive than stainless steel. This advantage makes copper the very best material for cooking, as it is unsurpassed in its ability to heat up evenly and rapidly and to cool down quickly, allowing for maximum control and great cooking results.