No Cover Firm - Provides Strong Pinpointed Support Adjusts to Your Body Instantly - Latex Foam Naturally Stays Cool Made of Natural Latex Harvested from Organically Grown Rubber Trees GOLS Certified Organic (Global Organic Latex Standard) Fair For Life - Fair Trade Certified Natural Latex Foam is a comfortable, durable and breathable material that is the perfect addition to the top of any mattress. We designed the Pure Green Natural Latex Mattress Topper to capture and enhance the best qualities of natural latex foam. It is made with the purest formulation possible through a superior production process and is certified under internationally recognized health and environmental standards. The Firm Topper is extremely strong and supportive without being rigid or stiff and is best for those who prefer to sleep on a firm mattress. While it is always tricky to add firmness to a mattress that is too soft, we do have customers who do this successfully using at least a 2” or, preferably, 3” firm topper. It can also work great as a bottom layer in a DIY mattress. IFD measurements are provided but perceptions of firmness can vary.