Established in 1946, Kolcraft is a family owned business that built its history by manufacturing sturdy and safe crib mattresses parents have depended on for decades. The Kolcraft Pure Sleep Therapeutic 150 crib and toddler bed mattress is the next step up to the Kolcraft Pure Sleep Therapeutic 80 crib mattresses with an increased coil count of 150, which means the coils are closer together to provide a firmer foundation. Built with an 150 heavy gauge coils interwoven for durability and support and thick hypoallergenic all around support wrap that provides a firm foundation baby doesn"t feel the coil and stays comfortable and supported for years. The embossed reinforced waterproof cover is hypoallergenic and designed with waterproof binding so the entire surface can be cleaned with soap and water. The natural airflow pocket keeps the mattress fresh without the use of small metal vents. Measures 51.625 x 27.25 x 5 "es and fits both cribs and toddler bed frames. 10 year manufacturer"s warranty on workmanship and materials. Meets or exceeds all flammability, lead, and phtlalate testing and does not contain toxic fire retardants.