Part of our flagship HD collection, the Medicoil HD line is specially designed to offer the ultimate in heavy-duty support and exceptional durability. Built with the heaviest coil unit on the market, Medicoil HD provides increased comfort, support, and stability. These mattresses incorporate high-density and high-performance foams and latex, have a higher concentration of coils in the center third, and high-density foam edge support. This collection is one of the best values for those who want firmer and/or longer-lasting durability, including, but not limited to, plus-sized individuals.