Firm and supportive, the Relyon Memory Plus 1800 Pocket Mattress features an extra-deep memory foam layer for perfect comfort. With 1800 individual pocket springs, this mattress will support your back and provide a firmer feel. It's a great choice if you love sturdy support without compromising on squishy comfort. Finished in a knitted cover, it helps prevent dust mites too for a healthier sleep. Enjoy Free Next Day Delivery and an 8 Year Guarantee!