Yes. All of our mattresses have passed rigorous testing to prove flame retardant. Like most major sleep product brands, our Mattress and Mattress Advanced contain the necessary flame retardant chemicals required by law to pass the testing in a fire sock. The fire sock (inner cover) should not be washed and handled with care. Our Top Mattress, Top Mattress Luxe, Futon and Portable models do not contain any additives to the material in order to pass flame retardant tests. Flame retardants are a key component in reducing the devastating impact of fires on people, property and the environment.