We aren't big fans of Flame Retardants. There is a big political ordeal around the need of them. As an example, FR material delays ignition by only a few seconds but produces quite a lot more smoke which is the primary killer in a fire. We should probably do a blog post about it.

As you may know, FR is a requirement and mattresses have to be thoroughly tested in a lab. We use a rayon/poly/sand blend that is inherently fire retardant. We chose that material because it is chemical free.