My child wore this a few times during basketball practice two years ago, but has since quit, so I am selling it. Size: Free Arm circumference (upper): 16cm, Arm circumference (lower): 9cm Length: 47cm *Please forgive any slight errors as this was measured by a amateur. Please refrain from purchasing if you are sensitive to used items, and please do not negotiate the price. I may be slow to respond to questions during the day due to work. Shipping will be in simple packaging. I strive to make this a pleasant transaction for both parties.