Stretch to Fit Mattress Cover w/ Zipper

I have a three piece memory foam mattess that I had cut to size, it would always seperate and slide off of my bed. I bought this as a last ditch effort, when I opened the box I thought "there is no way in hell this is going to fit". It did! It stretched over the whole thing, of course with a little work, and it keeps the pieces together really well.

This mattress cover is not one of the quilted ones. However, it covered the XL Twin mattress completely and with the zippered opening it closed up completely. Used this to cover a mattress pad which kept shifting around. It solved the problem.

I bought this based on the review about the memory foam mattress. About five years ago I purchased two high density 4" mattress toppers to make a mattress (was cheaper that way) and put them in futon covers. The problem was that they were always sliding askew from each other. It took a lot of effort, but they fit into this protector. After I got them into the cover, I made the bed and the sheets stayed put like they haven't before.
I don't plan on removing the cover, I see it as a permanent casing, but I have to option of machine washing it. Very highly recommended if you need to fix a memory foam issue and don't want to pay $250 for a commercial casing.