Instruct: Classify a review as either positive or negative.
Query: OK for short-term.

I purchased my 3" full-size memory foam mattress topper about 10 months ago. Initially, the memory pad provided the comfort and support I needed, but about two to three months ago, the pad developed a significant depression in the middle. Flipping it over didn't help. It has a large permanent sag in the middle, there are tears in the foam where the sag has formed, and the edges of the pad have begun to discolor.This product deteriorated very quickly. I do not recommend you purchase this, unless you can afford to replace it every 6 months.