This latex mattress is arranged in three layers that give you total control over your sleep health. A base layer of Firm latex provides healthy back support while the Medium layer adds a dynamic quality to mimic an innerspring. The top layer of Soft latex relieves pressure points on the body for a perfect night sleep. Each piece is assembled unlaminated into an organic cotton and wool zippered cover so the layers can be flipped for longevity, or rearranged seasonally to fit the changing preferences of your body. The combination of latex, cotton, and wool makes this an all natural, durable, cool, and breathable alternative to quick-ship memory foam mattresses.