This oven tray is the largest I could find that still fits my standard student flat oven. The non-stick coating is of high quality and has a heavy weight feel to it, which is always a good sign. Perfect for baking sponges etc and nothing sticks to it. All you need is a good wipe with a damp towel after using. I have always trusted the MasterClass series products and this one certainly has not disappointed me. 5 stars.