Abstract: A mattress structure that provides a relatively soft resilient surface under the weight of a recumbent infant or small child and also provides a degree of air flow, by means of bumps, depressions and ridges at the points of contact with the infant or child thereby providing a comfortable sleeping surface for the infant or small child. One version of the mattress structure is comprised of a combination of a base layer of relatively firm, resilient plastic foam having two major surfaces that are substantially flat and a relatively soft, convoluted foam cover layer, that covers at least one major surface of the base layer leaving the convoluted surface of the cover layer exposed. The combination of base layer and cover layer form a mattress filling that is contained in a mattress ticking.