Dream On Me 2 In 1 Breathable 150 Ultra Coil Inner Spring Standard Crib & Toddler Mattress, (Model #BR-150) comes with a breath flow technology. Dream On Me 2 In 1 Breathable 150 Ultra Coil Inner Spring Standard Crib & Toddler Mattress, (Model #BR-150) is designed to fit standard full-size cribs it features 150 durable, interwoven, heat tempered, steel coils providing supreme comfort,hypo-allergenic, CertiPUR-US certified layer for comfort these mattresses are 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 2 In 1 Breathable 150 Ultra Coil Inner Spring Standard Crib & Toddler Mattress, (Model #BR-150) 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.