The Double Outlast Superior Memory Foam Mattress features a deep layer of high density memory foam upon a superior reflex foam base for an optimum combination of comfort & support. The mattress comes roll-packed for ease of transportation. The luxurious high density memory foam layer moulds to the contours of your body’s natural shape during the night to help relieve pressure points & ease joint pain. Finished with a luxury quilted Outlast cover, the Outlast Superior delivers unrivalled comfort. Outlast Technology was developed for NASA to help control extreme temperatures in space. These smart fabrics work with your body, regulating temperature to create a better sleeping environment, & therefore a deeper & more restful sleep. No more ‘too hot’ or ‘too cold’. Memory foam is naturally resistant to dust mites & is hypoallergenic & antibacterial making this the perfect choice for those suffering with asthma or allergies.