You are in the market for a fitness tracker and the Vivosmart HR seems like a good one. You look at the sizing options and your brow furrows in confusion. Does "regular" mean average? What constitutes x-large? Furthermore, why should you care? Does sizing matter in a fitness tracker?

As a matter of fact, size is quite important in a fitness tracker. Let's look at why that is and how to find your size for the Vivosmart HR.

Why is sizing important?

Make sure you get the right size

You're going to wear your Vivosmart HR a lot. All of the time, actually, if you want to get the most out of it. You aren't going to do that if it isn't comfortable to wear, so making sure that you get a proper fit is key. Since the VivoSmart HR also has a heart rate monitor, you'll want it to fit properly for the best accuracy.

How do I find out my size?

The Vivosmart HR comes in two sizes: regular and x-large. Regular fits wrists with a circumference (the distance around the wrist) of 5.4 to 7.4 inches (136-187 mm.) X-large fits wrists with a circumference of 7.1-8.8 inches (180–221 mm.)

To find your size, you can download and print this guide. No printer? No problem. Simply take a piece of string and wrap it around your wrist. Make sure that the string is snug, but not overly so. Mark the point at which the two ends of the string meet around your wrist. Finally, measure the distance from one end of the string to the point you marked.

Which size is right for me?

Garmin's sizing guide states "Choose the size that fits your wrist snugly." Additionally, for heart rate monitor accuracy, this means that the band should fit comfortably two fingers above your wrist bone.

If you find that you're close to the upper limits of the regular size range, Garmin further advises that you choose the larger size. Something else to keep mind is that the Vivosmart HR's band is adjustable, like a watch band, so there is some play within the size ranges.

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Size is everything

If you're looking for a fitness tracker with a heart rate monitor, Garmin's size ranges are wide enough to accommodate most wrist sizes. So,whether you have dainty wrists or rawboned, broad ones, you can find a Vivosmart HR tracker that fits you.