ERGO Comfort pairs the excellent pressure-relieving properties of thermo-sensitive memory foam and the responsiveness of the individually packed pocket springs. The pocket spring unit aligns the spine and helps relieve aches and pains, while the memory foam allows gentle sink of the body for an undisturbed sleep.These springs are the longest-lasting, easily recyclable and very friendly to Nature material. This model is offered in zippered cover made of super soft Lyocell fabric, enriched with fully recyclable TENCEL™ fibers,designed to move heat away from the surface of the mattress to maintain an ideal temperature for a luxuriously comfortable and wholesome sleep.