This is a good mattress protector and does indeed keep liquids from damaging your mattress. However, there is one drawback for me.  I'm not sure what they mean by "temperature balancing" in the description, but this item generates a lot of heat!  The first few nights it was on my bed, I thought I was imagining things and tried to ignore it.  Then I removed it and sure enough - the source of the heat was the protector.  Because winter is almost here, I'll leave it on because I like the look, feel and fit of it.  But I'll  look for another product for summer.