What a fantastic baking sheet! Double sheet of metal. The size in inches is right, slightly larger in centimetres than stipulated (35.5 x 28.3), but pefect for my needs. (Hope the non-stick coating will last as they say ... time will tell ... but it looks very hopeful ...)
6 months later: non-stick coating still perfect. One little thing I have found: when you wash it, water gets inside the tray via the little holes on the under side, so I have to let it drain (overnight) before putting away. Otherwise rusty water runs from it. Also the tray tends to bend easily.
Having said all that, I still like them, (I have three now!), and would still give it five stars ...