The memory foam 6000 mattress is made from unique upper layer of high density visco elastic polymer gel originally designed for nasa missions it is soft and pliable following the outline of your body perfectly memory foam 6000 mattress provides the best possible support to your body spine allowing your body to immediately find the best possible sleeping position the mattress is available in regular and firm comforts with a double jersey zip off cover 5cm of memory foam 10cm of reflex foam