mattress

I got a memory foam mattress recently (Zinus 12" Queen) and while I really like it (and no longer wake up sore) it's really warm. I wake up slightly sweaty on whatever side was laying on the mattress. So I'm guessing it's cause of lack of airflow and have seen there's mattress toppers that...

My wife wants a new mattress and i see these online ones. The mattress we have now is a double pillow top so we can flip it every few months. But to those of you with single pillow top mattresses do only rotate the mattress since flipping it negates the pillow top. And then if i cannot flip...