A portable infant bed has a bottom panel with a perimeter and a top sleeping surface. A side wall is connected to the perimeter of the bottom panel around a periphery of the bed. The bottom panel and side wall are foldable and unfoldable between an in-use configuration with the side wall extending up from the perimeter and surrounding the sleeping surface and a folded configuration with the side wall lying generally parallel with and adjacent the bottom panel. A vent through a portion of the side wall positioned at a level near the sleeping surface, the vent permitting air to pass freely through the side wall.
This application is a continuation-in-part application claiming priority benefit of U.S. patent application Ser. No. 11/362,264, which was filed on Feb. 24, 2006, and which was entitled "Child Containment Structure with Ventilation Panel." The Ser. No. 11/362,264 application is a divisional application claiming priority benefit of U.S. patent application Ser. No. 10/808,597, filed Mar. 25, 2004, now U.S. Pat. No. 7,003,821, and which is a continuation-in-part of design application Ser. No. 29/185,439, filed Jun. 30, 2003, now U.S. Design Pat. No. D500,213. Each of these related applications is incorporated by reference herein in its entirety.