The Kolcraft Pediatric 800 Crib Mattress and Toddler Bed Mattress offers 80 durability tested extra firm posture supportive coils that respond to baby s movement while thick and airy cushioning provides support and comfort all around. This baby bed mattress has hypoallergenic materials and no added flame retardants making it a safe space for baby’s slumbers. The baby crib mattress also has a reinforced waterproof surface that protects baby s mattress inside and out and can easily be cleaned with a damp cloth. An airflow pocket allows the baby mattress to safely breathe without metal vent holes – an original Kolcraft design. The Kolcraft Pediatric is tested for safety including GREENGUARD GOLD Air Quality Certified to help ensure a healthier sleeping environment for babies (the GOLD standard is a stringent test for children s products). It also complies with CPSIA testing is made without lead or harsh phthalates and conforms to ASTM crib mattress standards for safety and quality including firmness fit and durability. Lastly the Kolcraft Pediatric fits U.S. standard baby cribs and toddler beds (measures 51.63” L x 27.25” W x 5” H) so you can pair it with your favorite baby crib or toddler bed. Kolcraft is a family-owned and operated company a premier crib mattress/toddler mattress manufacturer that parents have depended on for decades.