Just three all-natural ingredients and no chemicals. The most important thing for your infant's well-being is a safe and healthy environment. That includes a crib mattress without fire retardant chemicals. All mattresses by law are required to be meet flammability standards. Some mattress manufacturers use fire retardant chemicals to achieve this. This isn't necessary with wool, which is a natural fire retardant. Thislatex mattress is wrapped with wool and passes all fire safety tests. You get peace of mind, and baby gets all the rest needed to grow and develop. A latex crib mattress will conform to the body, promoting better circulation and more restful sleep. Latex is also three times as breathable as polyurethane foam. This extra-firm mattress complies with all federal crib regulations. Made in the US by Green Cradle. Use a slatted crib frame for proper support.