Yes, the mattress protector makes a difference...

Hi sheep123,

While I don’t own any of them so I can’t speak from direct personal experience … based on feedback from forum members and from retailers that I’ve talked with … I think that the Luna mattress protector would probably make a good choice and some of the other thin membrane type protectors that are listed in the mattress protector post and the other posts it links to here and here would probably make good choices as well. I would focus on the ones that used natural or semi-synthetic fabrics (like cotton or viscose materials) because they do a better job or absorbing moisture and if they use a jersey or knit fabric they would probably be more stretchy as well.

Phoenix