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Armband Size Guide

Upper arm circumference

How to Measure

  1. 1Wrap a flexible tape measure around your upper arm
  2. 2Measure at the fullest part (mid-bicep)
  3. 3Note in inches or centimeters

Size chart

Size Inches cm
Standard Armband 8.5″ – 15.5″ 21.5 – 39 cm
Extra-Long Armband 12.5″ – 18.5″ 31.5 – 47 cm
Both armbands fit most body types.
Additional bra extenders can be purchased at any store if larger sizing is required.

How do I learn fertility awareness?

By Liza Blake

You can learn your chosen fertility awareness method through a variety of mediums: instructor, online course, or book/manual (reach out to us to Get Your FREE Fertility Awareness Starter Guide). How you learn affects the efficacy of the method (with instructor-taught being the gold standard referenced in studies), so choose your learning medium in line with your intentions: book/manual, course, or instructor.

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