Mattress Supermarket is committed to helping customers find a mattress that is safe from toxic materials, one that reduces chemical usage and is healthy. A safe mattress should be made from foam or springs, covered with non-toxic quilting. There are three major certifications to look for when looking for a safe mattress. Certipur.US certifies polyurethane foams that are made without harmful substances like formaldehyde and heavy metals. The Control Union’s GOLS certifies products made from organically grown natural rubber latex. OEKO-TEX tests textiles used in mattresses, ensuring absence of harmful substances.