Looking for a natural mattress? Our Natural Dreamer Firm mattress from Berkeley Ergonomics is made with organic cottons, latex, and wool. The mattress is great for comfort and support with 1500 pocketed coils. On top of the coils is a a split layer of soft latex. Between the two layers of latex is a posture flow coil that allows contouring support to your body as well as air flow. It is then wrapped in wool and topped with an organic cotton cover.