This is a CGI effect that you can do in reality by only using ONE rubber band.
The performer has a red rubber band in his hand. The color of the band will change slowly after the finger crosses the band.
· Only use ONE rubber band to complete the color change
· No angle limitation
· Reset immediately
· No thread or other device
· Multiple routines
What do you get?
· Two gimmicked rubber band
· Five normal red rubber band
· Five normal yellow rubber band