This is one of the more economical mattress protectors.

For us, we just purchased a new foam mattress, and didn't want to take any chances of liquid getting through it!

It fits perfectly onto our mattress (10" deep), with room to spare for a large mattress if required.

It does crinkle a bit when you move around, but it's not overly annoying (I am quite sensitive to sounds).

Husband did spill beer on the bed last week, and it didn't seep through the cover, so I can attest that it definitely keeps liquids out!

Overall, for the price point, it fits our needs.