We’ve ensured that your Helix Mattress meets all of the strict safety regulations set forth by the US Federal Government. According to regulations 16 CFR Part 1633 and 16 CFR Part 1632, all mattresses sold in the US must pass an open flame test to evaluate how fire reacts to the bed and its components. Each of our beds contains a fire retardant fabric to comply with regulations. This material is a fire retardant, yarn fabric made from a chemical-free Rayon barrier that is is the form of a small foam layer. Rayon fiber is a manufactured fiber composed of 100% regenerated cellulose.