In a year of wearing my watch almost 24 hours a day, 7 days a week, this strap has remained intact. The plastic hardened over time and became quite brittle. From experience with these straps I can say that if I try to flex it significantly it will likely break. However, it doesn't really affect my ability to use the group. I would not recommend this strap for those who tend to take their watch off frequently as I suspect it will eventually break (and no longer lay flat).
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