Organic cotton and soft wool have become popular amongst health-conscious buyers. Cotton and wool mattresses are not treated with fire-retarding chemicals needed by law. The mattress should not include any polyester fillings and need to be made of pure wool, preferably lamb or alpaca wool or a minimum of latex foam. The ideal mattress should be dye-free, allergen repellent, hypo-allergenic and anti-bacterial. Preferably, the bed mattress ought to be moisture repellent and flame resistant, too. The bed mattress must be framed in natural natural cotton. Memory foam bed mattress are extremely ranked as the most ideal bed mattress for allergic reaction victims, but some individuals recommended that these bed mattress become stiffer in a hot environment.