Time tailored craftsmanship goes into making the perfect medium mattress from Hypnos. The Hypnos Wheatley Supreme Wool Mattress has 1800 super deep ten turn pocket springs. The springs have been dual heat treated, ensuring the springs hold their height for the lifespan of the mattress. Hand tufted on both sides so you can flip seasonally. Deeply filled with 100% British wool, the fillings are traceable to their source through Red Tractor affiliation. Firmer springs around the edge of the mattress are held securely with hand side stitching. Sleep right to the edge of your mattress with no roll-off feeling. Back by a 10 Year Guarantee for total peace of mind. Free Next Day Delivery.