Very thick and heavy rubber. Way better than I expected. Maybe better than the UT Wire versions, but they are also lighter and for smaller cables. Really great gift idea as well!

Better than what I thought I was ordering. Exception idea and much better than hunting for that twist tie or rubber band that keeps breaking. Did not realize they came in various sizes which will be good for organizing small and medium cables. Great to have around that cord / cable mess a lot easier to keep neat!