I searched for anthropometric data to back up the sizing of the wristband. Initially Yoakim had said that one size would be adequate, being a larger size which could then be pushed up the arm of the user to sit higher if they had a smaller wrist. I think that it would be worthwhile to manufacture possibly three various sizes to account for the variation in wrist circumference. The anthropometric data for the 5th to 95th percentile human is documented above with the wrist circumference ranging from 13.7 to 16.2cm. Sizes could be say 14cm (sml), 15cm (med) and 16.5 cm (lrg). This data was from the Anthropometry and Biomechanics section of National Aeronautics and Space Administration website (NASA).
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