It's true that memory foam mattresses typically sleep warmer that spring mattresses. However, we have designed the fabric to be made of wicking amterials that help to pull moisture AWAY from your skin, keeping you cool.
The top multiple layers of the mattress are made with open cell memory foam which allows air to flow more easily and helps to keep you cooler.
If you are switching from a spring mattress to a foam mattress, your body will need some time to adjust to the change.