In order to ensure a proper fit of your armband, use the following method to measure your arm size …

1) Take a string or cord and wrap it around your straightened arm. Make it snug, but not too tight.

1a) Alternatively use a tailor’ s cloth measuring tape and skip steps 2 and 3

2) Get a pen and mark the point on both sides where the string overlaps

3) Lay the string flat and measure the distance between the two points that you marked.

4) The resulting measurement is your correct size