I have been wearing these Hazelwood bracelets for years now, I like the look of them but I really wear them because they help keep my headaches at bay. I replace them every 3-4 months and I can tell it’s time to replace them when I start getting frequent headaches. If I ever have an issue with the order I email the company and they always answer promptly and then they help me out promptly too. Highly recommend this product and company.