Upgraded from Air to Areopex, hoping I can have a longer lasting set.
Important: make sure your printer is scaled to 100% on a standard 8.5” x 11” page.
Cut out the measuring tool using the dotted line as a guide.
Hold the left side (L) behind your left ear and stretch the tool across the back of your head (toward your right ear).
If the white section of the sizing tool is touching your right ear, choose Trekz Titanium Mini.
If the the orange section of the sizing tool is touching your right ear, choose Trekz Titanium.