Organic mattresses combined a luxurious feel with a healthier sleep. Made with hypoallergenic organic latex, these organic mattresses also sleep cooler than other mattress technologies. They are not made with harmful chemicals or fillers like memory foam, but they still offer the same full-body support.The Autumn Mist Firm by Nature"s Calm is the firmest feel of the Autumn Mist series. It features a firm 6" organic latex core and three 3" layers of organic Dunlop latex. The organic latex is encased in an all-natural wool cover.Many organic mattresses are very short and feel insubstantial, but because of the latex core the Autumn Mist is able to offer superior support and a healthier sleep experience without sacrificing height.