Product Detail Young children are the most vulnerable to toxic exposures Government mandated flame retardant chemical based fire barrier is zippered and removable Removable fire barrier allows access to inner components to flip, check for mold or mildew, and make sure even the inside is clean and sanitary No chemical adhesives Natural Latex core, not inexpensive innersprings . The "Strobel Organic Crib Mattress - Natural Latex Dual Firmness" is best product for you. We recommended Strobel Organic Crib Mattress - Natural Latex Dual Firmness