The Harvest Green Topper is constructed using GOLS certified organic latex rubber, GOTS certified organic wool and, GOTS certified organic cotton. There are absolutely no polyurethane foams or toxic fire retardants contained in this mattress topper. There are two firmness levels to choose from: Soft or Firm. Please select the desired firmness level and size above. We also offer a Vegan version made without wool. See certifications for this mattress topper and learnmore details here.