If you don't have fexible measuring tape, use a charging cord and ruler / stiff measuring tape.
Step 1
Grab a tool to measure
Step 2
Measure this distance
Tilt your head back and measure around the base of your skull, from the top of one ear to the other.
Step 3
Choose your size
Standard
Below 28.5cm
Large
Above 28.5cm
If you're on the cusp, we suggest the Large.
Over-flexing the Standard headset can break it!
If you'd like to try on a non-working Standard headset to assess fit, please contact us: help@zygoco.com