We have just got a new bed with separate mattresses so this cover is great for me, as my husband doesn't get hot in bed but I do. The first night with the cover was great I had to get up to put a blanket over my feet, as I was cold, the night before I was throwing the covers off. Well worth the money!
A suggestion make a cover half the cool and half normal, I have friends with the same problem as us but don't have 2 mattresses.
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