Introducing the Stokke® Sleepi™ System 1crib foam mattresses. Manufactured by Colgate, a company with over fifty years experience as crib mattress specialist, this crib and bassinet foam mattress pair is the ultimate in comfort and support for little ones. Each mattress has a standard foam core with a firmness of 1.2 density (pounds per square inch) and a longevity of 40 ild (load deflection) for the best support. Each mattress includes a non-toxic cover that is made from water-resistant damask cloth. Crib mattress measures approximately 45" L x 26" W x 4" H. Bassinet mattress measures approximately 30" L x 23 1/2" W x 1" H. Made in the U.S.A. Three-year warranty.