I got so frustrated with seeing the 1 star reviews about the oven liner flying all over the kitchen etc that I just HAD to write my review! This magic liner really works. As others have already said, all you have to do is make sure you do not cut it width ways, so that it curves up the sides of the oven and tucks under the shelf supports. If you do that, it will work for you and you will wonder (as I do) why you didn't buy one sooner. I am back for a second one, not that mine has worn out, but because I daren't be without one. The base of my oven NEVER needs cleaning!! WONDERFUL!