This bed does not offer any type of cooling system. The cool gel is sandwiched in between layers. If you want to sweat all night, buy this bed.
We bot this bed at Bernie and Phyl's , we saw another type of bed (at another competitor's store) that had the cool gel system on the top layer and it actually feels cooler. Do not waste your money with icomfort. We exchanged it (if you call paying an addition $250 plus taxes plus additional cost of new mattress) for another traditional mattress that we don't really like but they had nothing else in our price band.