Two nice 1940s reusable ice packs.  Wizard Dri-Cube & Polar Ice tins that you put in the freezer and put in coolers or lunch pails to keep food and drinks cold.  Great graphics on these unusual advertising tins.  Still Work!  Tins each measure 3-7/8" x 6" x 1-3/4"  Please see photos for more details and to evaluate condition for yourself