Dream On Me, Breathable Orthopedic Extra Firm Crib Mattress, (Model #BR-5E5G) features a 5-inch core for your baby's comfort which includes a breathe flow technology. Breathable Orthopedic Extra Firm Crib Mattress, (Model #BR-5E5G) is hypoallergenic and anti-bacterial. The CertiPUR-US certified layers mattress is covered with a breath flow material on the infant side and a waterproof cover on the toddler side with lock stitch seams. Dream On Me, Breathable Orthopedic Extra Firm Crib Mattress, (Model #BR-5E5G) meets the Federal Flammability Standard, rest easy knowing this mattress is tested for phthalate and lead and constructed with quality materials and workmanship in the USA.