Dream On Me, Breathable Orthopedic Extra Firm Crib Mattress, ( Model #BR-5E5WL) features a 5-inch core for your baby's comfort which includes a breathe flow technology. Breathable Orthopedic Extra Firm Crib Mattress, ( Model #BR-5E5WL) 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-5E5WL) has a Reversible design that allows mothers to choice the Breathable white side or the printed side. Dream On Me mattress 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.