The choo choo mf5000 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 choo choo mf5000 mattress provides the best possible support to your body spine allowing your body to immediately find the best possible sleeping position specification 1cm of memory foam 14cm of reflex foam 15cm thickness anti dust mite hypo allergenic double jersey fabric cartoon gra