The Theragel mattress features Viscool a state of the art gel infused viscoelastic memory foam with amazing pressure relief. The Australian wool in the quilting is temperature neutral which helps regulate body temperature, cool in summer and warm in winter. The support unit is a Micro Barrell Pocket spring with 1850 spring count. Extra strong foam box construction surrounds the spring unit. Australian made and owned and comes with a 10 year guarantee.