20% Off Flash Sale Ends In

Shop Now
  • Reviews

Not sure where to start?

Shop Now Take the 60-second quiz
Blog
Blog
Science & Research
Science & Research
How it Works
How it Works
About Us
About Us
Tempdrop 2.0
Tempdrop 2.0
Conceive with Confidence Bundle
Conceive with Confidence Bundle

My Cart

Your cart is empty

Continue shopping

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.

Your coupon code has been successfully applied

What is an OPK or LH test strip?

By Tempdrop team

Updated February 09, 2025

An ovulation predictor kit (OPK) measures luteinizing hormone (LH) present in your urine.

Related articles