I have very sensitive skin and they are not as comfortable as the original strap that came with my Fitbit Alta HR. However, unless you have incredible allergies like me, you will probably love them. They look great, very similar to the original strap but slightly longer and good quality. UPDATE (10/14/2017) - Yesterday I received a package from RedTaro which included a very special handwritten note and 2 other sets of tape (version 2 and version 3) that they designed for my allergic/sensitive skin. Your customer service is AMAZING. Version 2 straps were a bit too big for my wrist. However, the version 3 groups they sent in worked GREAT and are very attractive. (The gray bar in the photos is version 3.)
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