Review on 4PCS Fitbit Flex Band: Silicone Replacement Wristbands with Metal Watch Band Buckle - Large/Small - Sport Bands for Fitbit Flex Bracelet by Darryl Jennings

I like these. I like that they close. No fall. The original ones fell when I was sleeping or even walking sometimes. The clasp is just terrible. You are way better! None of them have ever fallen. They also somehow do not cause sweating. Others I've tried, my wrist sweats profusely under the strap. I have never had such a problem with them. They are strong, durable and wonderful. I highly recommend them to keep you from losing your Fitbit device. They're not exactly cheap. They're pretty comfortable. Sometimes I even forget I have it. And multiple colors are great, although I only use black at the moment. I've had it for a few months and it looks brand new.