Review on JOHO BAKING Non-Stick Cookie Sheet Pan Set - 2-Piece Baking Tray, 13inch, Champagne Gold by Linda Floyd

First of all they look pretty but don't let that or the many good reviews fool you. I bought this one last week on purpose so the pan would be stronger than average. It specifically states that it's good to 450 degrees, heavy-duty steel, and resistant to deformation. I used one of the sheets for the first time today at 425 degrees. HE CHANGED IMMEDIATELY ON FIRST USE, NOT EVEN TO 450, ONLY 425! That's ridiculous. Very, very disappointed that there should have been a better, stronger, thicker, more durable, non-deformable baking sheet.