Description Details: Craft Your Comfort 9 out of 10 couples have opposing mattress preferences. Now you can choose with a simple flip. Firm or soft on your side of the mattress. Unzip and flip to achieve your ideal comfort. Soft Side (great for those who prefer contouring from their mattress.) is ideal for: Side, back, and stomach sleepers. Smaller individuals. Firm Side (offers less sink and increased support for a more traditional firmer feeling mattress.) is ideal for: Back and stomach sleepers. Smaller individuals. Individuals suffering from sleep apnea. Sleep Coolly, Slumber Deeply Cooling gel-infused memory foam draws heat away from your body for a refreshing night's sleep. The Memory foam and base foam construction provide the comfort and support needed. Healthy Spinal Alignment Graphite infused foam reduces motion transfer, and molds to support your spine. Oeko-Tex Certified. Sag-Free Support A solid foam base guarantees you a decade of stable sleep. That's our promise to you. Get Better Sleep Memory foam distributes weight evenly, providing pressure point relief. Additionally, Your Iselect Phoenix Mattress combines open-cell foam and egg-crate layers to increase airflow, and disperse heat. Enjoy the gift of cool sleep with your selected comfort!