The Sleep Adventure 10" cooling graphite mattress is composed of a 6" HD base foam layer topped with 2" of transitional memory foam and 2" of graphite infused memory foam. This mattress is covered in a soft, breathable, stretch knit fabric (color may vary). Firmness rating is 6.8 on a industry scale of 10: feel is medium firm. All Sleep Adventure products are proudly made in America using CertiPUR certified foams - ensuring that our products meet standards for emissions and toxins. You can rest assured that you are getting a healthy nights sleep without breathing harmful chemicals or fiberglass.