OEKO-TEX has tested JLH for more than 300 chemicals, and it was found to have harmful levels of none of them. This earned this product the STANDARD 100 certification. JLH mattresses ensure high-quality and comfortable sleeping. By placing a set of uniform springs inside layers of upholstery, these product beds are imbued with a firm, resilient, and uniform texture. JLH mattresses ensure high-quality and comfortable sleeping. This product offers improved give for a lighter and airier feel. This makes it not only fantastically comfortable but also great for sleep health. JLH mattresses ensure high-quality and comfortable sleeping.