An apparently never used 1940s to early 1950s barware product called Stop Ice in the original box. The box says its "The Perfect Hostess Aid", and reads "Clever plastic "stop-ice" holds ice back while you drink. No more frozen lips, No more ice that slips. Each colorful handle a distinctive drink marker". Made by Cabri Manufacturing Co. of Hollywood California.
The 8 hard plastic tumbler inserts slip over the rim of your glass. The round discs have cutouts to allow the liquid through while retaining the ice. The colored clips are about 2" long, the ice catcher discs are 2" diameter and marked Pat. Pend. They have no damage but do need to be washed before use. The original box as an odd water stain pattern all over the top that almost looks like part of the design. It did not soak through to the reverse side of the lid at all.