How should I take my arm length measurement?

In order to take your arm length measurement, you should hold your arm up, slightly curved and out to the side. This position is also referred to as 'ballet 2nd position'. You should place the beginning of the measuring tape behind your shoulder, and feed it out following your arm making sure to pass both the elbow joint and the wrist, as pictured.

You should take the measurement at the point where you would like the sleeve to end. This is usually just past your wrist.