Each luxury Seasonal Turn mattress features warm side/cool side technology. With the warm side of the mattress featuring a wool blend close to the sleeping surface to keep you warm during the colder months. While the cool side of the mattress features a cotton blend close to the sleeping surface, keeping you fresh and dry during the warmer months. Layers of luxuriously natural and sustainable fillings work in harmony with our world leading innovative spring systems to provide excellent comfort and lumbar support and your best night’s sleep. The Dahlia is available in sizes from 2'6" to 6", with or without drawers, and as a mattress only option.