Comfort Select Twin XL Size 10 Inch Thick, 5.5 Visco Elastic Memory Foam Mattress Bed Comfort Select memory foam priducts naturally repel microorganisms and allergens. Comfort Select memory foam minimizes the symptoms and discomfort from many common sleep disorders. Comfort Select memory foam eliminates up to 87% of gravitational forces for years of restful sleep. Comfort Select also has a longer memory and does a surperior job of relieving pressure points. Comfort Select memory foam helps minimize Sleep Apnea, Snoring, Insomnia and Fibromyalgia.