HARRISON EXPRESS Need a mattress in a hurry, Harrison Express is the range for you. Attic and staircase friendly, this mattress comes rolled up in a bag for ease of movement. A range of pocket sprung mattresses hand built to the highest quality available on next day delivery direct to your home. These mattresses are built using our Posturfil mini pocket spring system with hand side stitched borders for support and containing the finest fillings and upholstery.