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After the original Garmin fastener broke (lasted about 2.5 years), I looked into replacing the entire watchband. I hate throwing away anything that can be fixed, and I wasn't thrilled about paying ~$30 for a Garmin band, especially since the fastener was the only thing broken. Plus, I read too many mixed reviews of the featured third-party replacement bands. Luckily, I found these Ruen replacement fasteners instead. They fit well enough (I never have to adjust it during a run). I can't speak to the durability as I've only had them for a few weeks, but even if one wears out there are 10 more.