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I would recommend the regular size. Although you could wear either size, you will be close to the minimum for the XL, and thus have a lot of extra band. You can see our full sizing chart at the following link: http://bit.ly/GRMNSizes -OA
Sorry, there was a problem. Please try again later.I have a smaller wrist size but will probably order the XL so that I can move the Vivoactive HR higher up my arm to increase HR accuracy when doing activities that flex my wrist often. I've read that wrist flexion can through HR reading off. Sliding the Vivosmart to various location on my arm can also help reduce skin irritation from having the device in one location too long, I just have to deal with the extra strap length when having it on the slender part of my wrist. If you don't like extra strap length potentially flapping around, then get the shorter strap :) Oh and I may wear it over a wetsuit sleeve when Paddle Boarding, extra strap is good!
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