I'm a Desiel Technician. Ive almost removed my ring finger in times past working. Crushed my original wedding band on my finger. (This is my forth wedding ring) Received deep cuts from Hanging my ring on engine components, etc.. I didn't think it would last long. Figured it would get nasty quick, and hold the dirt like rubber does. Cut, shrink, swell, or rip... I have certainly field tested it. It's holding up very well. It gets grease, oil, and all manner of filth on it daily. I like it.