What are those plastic bed sheets that protect your bed called?

my cat has peed numerous of times on my bed. i cleaned the sheets and everything. but of course the mattress stinks! my friend told me that there are plastic sheets that go over your mattress and under your sheet that go overs your mattress. it'll block away the smell and keep the mattress cleaner. but ive tried looking for it on the internet and can't find a name for it. where would they sell these? sears? walmart? target?...thanksWhat are those plastic bed sheets that protect your bed called?
they are called mattress protectors and are usually sold where ever bed linnens are sold. a larger question is what is going on with your cat? when an animal as particular as a cat starts peeing all over, it signals serious bladder or urinary problems that could be potentially life threatening. seek help for the cat first THEN seek the mattress protectors. (by the way, sleeping on those things are murder - plastic is HOT ! even through the fitted sheet)What are those plastic bed sheets that protect your bed called?
waterproof sheet protectors
They are plastic mattress covers, you can find them at Wal-mart. They are inexpensive. You can try cleaning the mattress with some white vinegar to neutralize the cat urine odor also.:)
matress covers

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