Kid's Nutcase bike helmet. Original Owner. Excellent condition. Adjustable pads on inside of helmet. Originally bought at Bicycles, Etc. in Naperville for $60.00. I'm not sure of the exact size, but my son was about 8 yrs old at the time and he had a small head. This helmet is about the same size as the XS currently selling at Bicycles, Etc., if that helps.