Medical Breathable Mesh Arm Sling (11.811 in) Shoulder Support Belt with Adjustable Strap, Injured Forearm Supporter Cuff Wrist Elbow Brace Immobilizer Fracture Protector for Child Kids, Black

Very lightweight, perfect for the summer heat, but doesn't keep my 6 yr olds arm very secure. Falls off and not very supportive. Used more as a reminder to him and others not to use his arm.

This thing is so cheap. It’s also shaped weirdly so it was not comfortable at all for my son to wear. He actually refused to wear it because it never sat right.