This Wilton Armetale oval tray is 10.75" wide x 18.5" long x .75" deep and is stamped with "Michigan State Spartans" and the block S on the rim. The tray has a polished finish and is safe for stovetop or oven use. Armetale metal is a non-toxic, aluminum-based alloy that is FDA-certified for food safety. Armetale products will not crack, rust, or break with normal usage. They are not dishwasher or microwave safe.