Colgate extra comfortable 5.1cm thick Portable Crib / Mini Crib Mattress. Fits standard size portable cribs and mini cribs. Quilted laminated waterproof, easy clean white cover. Mattress is made with CertiPUR-US perofrmance certified foam and is Greenguard certified to have no harmful air emissions. Easy clean with damp cloth and mild soap. Mattress can be used on either side unlike lower quality mattresses.