Gem Mattress has been designed using our advanced technology that wicks away heat to maintain a balanced body temperature, combining the benefits of production on technology with our ventilated, open-cell design. Gem Foam is 10 times more breathable than other nationally advertised foam products. It is also more supportive, as millions of open-cell beads gather in areas that need it most for additional support and personalized pressure relief, creating relaxing, better, and more supportive sleep.