How to choose the right size
Upper-Arm Width (Bicep)
Measure around the bicep with arm straight.
Check against the ranges below.
Measure from wrist bone to arm pit
Age Guide for Kids
Is a guide only - kids do grow at very different rates!
Adults - Regular or Relaxed Fit?
Crazy Arms are designed to fit like a second skin for athletic activity.
This should feel a little tight on first wearing, but will ease to a snug fit after one or two wears.
* If you are using Crazy Arms for activities with high arm movement (eg golf, tennis, cricket, sailing), we recommend the "Regular" Fit up to a 32cm bicep.
This will help ensure the upper elastic band keeps the sleeve in place.
We offer a free size exchange on sizes for un-worn Crazy Arms.