Wool is included because it has inherent fire resistant properties: “This allows the Pure Green Natural Latex Mattress to naturally comply with federal flammability regulations without the use of any fire retardant chemicals or barriers.”
No Flame Retardants
Did you know that 100% natural latex mattresses are naturally fire resistant? Most mattresses rely on chemicals to help them pass fire retardant laws but a 100% natural latex mattress can do it pretty much on their own. Depending on the brand of natural latex mattress you buy, it will either use fewer and safer chemicals or will more likely use natural barriers such as wool to pass the federal fire retardant laws.