My mother got this as a present & at the age of 91 really doesn't use her oven very much, so she passed it along to me. I hesitated to use it, but one day while baking a casserole I gave it a try. I was amazed at how easy it is now to just pull this out and clean it off rather than scrub the bottom of the oven and cheaper than running the self-cleaning feature. I highly recommend this product. Performance Lays flat underneath the element. Ease of Cleaning Dishwasher safe or wash with warm soap in the sink. Durability So far so good Design Thin and fits the over perfectly. Doesn't Stick Wipes off quickly.