The CertiPUR-US program only certifies flexible polyurethane foam for bedding products and upholstered furniture. Latex foam is outside the scope of our certification. It is possible for a manufacturer to include a layer of latex in a mattress that contains certified polyurethane foam. In this case, as long as the flexible polyurethane foam is certified, the manufacturer would be allowed to use the CertiPUR-US seal. You should contact the mattress manufacturer to ask if your model contains latex.