Microflex is a resilient 6 inch orthopaedic mattress made from high quality medium density foam thisr is a fantastic starter mattress for those who wish to change over from a conventional spring unit mattressr and ideal for children and teenagers as they grow the spine and neck will be supported in correct anatomicalr alignment which helps prevent development of back problems stiff neck and headaches later on r a distinct advantage of foam mattresses as opposed to sprung mattresses is the