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Can't comment on durability because I've only just purchased. But I bought this to help my recovery from knee replacement surgery after using one in rehabilitation classes in the hospital, it's has helped me get my flexibility back in my knee and strengthen the muscles around it. Not only that but there are so many other ways to use it in a training regimen.
I wanted to tone my abs and arms without having to spend money going to the gym. I therefore purchased the sports resistance band so I could train in comfort of my home whenever I wanted to. I have used a few times and does the job with my body aching the day after. Its strong and versatile with the exercise book helping to mix up the routine.
Ordered the wrong band but still going to use it as a friend, who is a P.T., advised me to try this brand and said he uses them himself. Make sure you check the band type before ordering but otherwise i am very happy.
Ho comprato la corda viola con 15-40 kg di resistenza, dopo due mesi di un uso quasi ininterrotto, posso dire che sono molto resistenti e di ottima fattura, unica pecca che si sporcano molto facilmente