16 May 2017 A special mention should also go to the Jawbone UP24. It might be a few years Beginners guide to fitness trackers. How to use your fitness 21 Jan 2014 The Up24 comes in three sizes (small, medium and large; a sizing chart is on Jawbone's site), and in one of two colors, Onyx or Persimmon. Jawbone UP24 Size Guide. Wrap a string snugly around your wrist. Mark the string where the two ends cross. Measure the string from one end to the marked place. See the size guide above to determine which UP Band is right for you. Jawbone UP Wristband - Large - Black - Track your Activity, Track your Sleep Patterns, 13 Nov 2013 15 Apr 2015 The Jawbone Up2 is a replacement to 2013's Up24: an affordable fitness band that tracks sleep. It's available now for $100 in the US. 15 Dec 2014 Jawbone - UP Wristband (Medium) - Onyx-Front_Standard Then see the size guide to the right to determine which wristband is right for you.I'm considering buying a used Jawbone UP24. It will be my first wearable device I've ever had. I've checked the sizing instructions on their Jawbone UP Sizing Guide. Back to top. Get to Know Us. Careers · Blog · About Amazon · Press Center · Investor Relations · Amazon Devices. Make Money with