I had the 30 pound band for over two years before it finally broke. Otherwise, it works as advertised, and I'm going to buy another one. I also have a 50 pounder, and it is a bit too strong for me, so I haven't used it much. I think I'll get a 40 pounder. I have been using the 30 pounder while going on long walks, stopping to do sets of 10 with each arm, alternating.
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