THE TEMPERATURE REACTIVE FOAM MOULDS ITSELF TO THE SHAPE OF YOUR HEAD, NECK, AND SHOULDERS PROVIDING CONSTANT SUPPORT AND COMFORT. IN ORDER TO PROVIDE PROPER ALLIGNMENT OF THE SPINE AND HEAD,WEIGHT IS DISTRABUTED OPTIMISING CIRCULATION. IS IDEAL FOR ALLERGY SUFFERS, PROMOTES GOOD BLOOD CIRCULATION ,THE SLOW RECOVERY MEMORY FOAM IS 100% TEMPERATURE SENSITIVE.