The z5 memory foam and reflex foam mattress offer a top layer of memory foam for comfort and a bottom layer of reflex foam for support. Memory foam is soft and pliable allowing it to follow the outline of your body. With a layer of memory foam that is pressure-sensitive, it is recommended by chiropractors and doctors alike. This mattress provides orthopedic support to your body and spine, allowing your body to find a good sleeping position and improving blood circulation resulting in improved sleep. There is a thick bottom layer of reflex foam used to act as the support mechanism/foundation layer in this mattress that provides a supportive layer to ensure your weight is distributed properly. This mattress is completed with a zip-off, double jersey, quilted, dry cleanable cover with key zones for improved comfort and body support. This product has been designed and manufactured in the united kingdom to provide high quality and also to ensure that it conforms to all British fire regulations.