I bought this strap to wear my Fitbit backwards while exercising with wrist straps. It was great and did exactly what I needed, but after just a month the rubber strap stretched and no longer held the watch on my wrist. I tried washing it in case the sweat kept the elastic from stretching, but after a month it was practically useless because it was so loose and practically dangling from my wrist. I have since bought another elastic watch strap with an adjustable strap which has worked great for the past two months! If it stretches, I can adjust the length and move on. Save money and buy an adjustable rubber band.
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