Too hot in bed

Over the summer I always have a problem of being too hot whilst in bed, I have tried everything from sleeping with a cold water bottle, to buying the lowest tog quilt I could find, none of these things helped. I recently found out about these memory foam mattress, which had a list as long as my arm regarding the things they claimed to do, I bought one at the start of this summer and to my amazement I have had no problems of waking up too hot. I don’t fully understand how it works but I’m truly grateful for it. Not only does waking up during the night due to being too hot affect your sleep, but also has huge risks on your health, so personally I’m just relived that I can now have a good night’s sleep.