There is increasing interest in the use of metallic foams in a variety of applications, including lightweight structural sandwich panels and energy absorption devices. In such applications, the mechanical response of the foams is of critical importance. In this study, we have investigated the effect of specimen size (relative to the cell size) on selected mechanical properties of aluminum foams. Models, described in the companion paper, provide a physical basis for understanding size effects in metallic foams. The models give a good description of size effects in metallic foams.