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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.

Fertility Q&A

What am I looking for in my chart to confirm ovulation?

basal body temperature

What am I looking for in my chart to confirm ovulation?

To confirm ovulation you are looking for two key things, at a basic level:  A sustained temperature increase. A change in your cervical mucus patterns. A sustained temperature increase:  Your...

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basal body temperature

Ovulation Confirmed - How?

You may be confused about how you can confirm ovulation. Whether you are using Tempdrop in manual mode or using Tempdrop’s premium subscription, here are some tips to help you understand what to lo...

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cervical mucus

Why should I track other symptoms?

Adding your cervical mucus (also known as cervical fluid) observations to the Tempdrop app will help you to identify your fertile window in real-time. The quality of cervical mucus increases as you...

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