Tempur Sealy International Inc. Sealy launched the new Optimum(TM), the first mattress to feature cooling gel foam from the top to the bottom of the mattress. The new Optimum(TM) Collection will feature OptiCool(R) gel memory foam with OUTLAST(R) material fused to the surface. The collection will be officially launched at the Sealy showroom during this year's Las Vegas Market from January 26-30.