Product review (5 stars): WONDERFUL
I am not a great chef . . . I make many blunders in the kitchen.  One of my most death defying acts is trying to reach in between my oven racks to move or adjust something on a cooking sheet (like potatoes).  I know,  I am suppose to pull the rack out and do what ever needs to be done (like turning over frozen foods fish and chips). Well, no matter how careful I am I eventually burn myself on the top rack.  OUCH!  These protectors are wonderful.  No more burns.  They do give off a slight odor the first few times.  Not horrible but noticeable.  Hey, no more burns and now no more odor  . . . great investment!  If you're a mom teaching kids to cook - great safety feature!