Hi wssviper,
The link doesn’t work (it brings up a page that says the domain expired).
I think though that it is a fully enclosed mattress encasement which is designed to protect you from bed bugs and dust mite allergies. There is more about these in post #2 here. If it has a waterproof membrane and no padding like this or this then it would also function like one of the thin membrane type protectors except it fully encloses your mattress instead of fitting on your mattress like a fitted sheet. If it’s one of the padded ones they sell like this then it would function more as either a combination mattress protector/mattress pad (if it’s the version that is waterproof) or as a mattress pad (if it just has the quilted surface).
I’m not familiar with the one you have so you are in a better position to know how it affects the feel of your mattress (which you’ve described in your previous posts).
Phoenix