Size Guide

How to choose the right size

Crazy Arms sleeve sizing

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

Is a guide only

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.
Crazy Arms kids sizing chart


Crazy Arms adults sizing chart