All Clad Ovenware 9 Inch x 13 Inch Oblong Baker Bonded tri-ply 18/10 stainless steel construction with aluminum core that produces supremely-even heat distribution 1.5mm wall thickness - designed to withstand extreme heat of commercial ovens. Maintains precise shape throughout a lifetime of service Brushed stainless steel exterior, polished cast stainless steel handles and flush interior rivets for easy release Lifetime guarantee of superior performance and made in the USA Dishwasher safe