Helix hybrid king mattresses combine the best of foam and spring technology. Luxe mattress upgrades include zoned lumbar support for better contouring, a plush quilted pillow top and 2" more height than standard Helix mattresses. Ideal for side sleepers (and couples with different firmness preferences), this mattress features luxury memory foam for pressure point relief on hips and shoulders. A TENCEL cover over the premium pillow top provides a soft, breathable environment for night after night of peaceful slumber. This medium-firm mattress is the most popular of Helix's Luxe series, offering a balanced feel for the top of your mattress with a little give.