I have used magnetic bracelets for 25 years. This is a very well made comfortable, light, and I believe tough bracelet. I own a Brangus cattle farm and it's got to be durable. There is no doubt in my mind that there is power in these magnets that are doing the job I bought to do. I ordered one for my son because he work's out a lot.
Pros:It's definitely a powerful piece of work.