Here at Bella Sera Organics, our organic mattress is made from fantastic organic materials: 100% certified organic cotton, certified organic wool, and natural latex that has passed the thorough standards of eco-INSTITUT. Our organic mattress rigorously passed national flame-retardant requirements without the use of chemicals or toxic flame-retardant barriers. In fact, we passed it just using wonderful organic wool, which is naturally flame-resistant! Each organic mattress is made from natural latex in the middle and is wrapped in an organic cotton and organic wool cover with a zipper on the bottom. There are no added flame retardants or chemicals of any kind used in this mattress. For each organic mattress model, you can choose "soft," "medium," or "firm" for each mattress.