Wrap a measuring tape around your head about a. Half-inch above eyebrows and take measurement two to three times to have the largest one. We appreciate your patience during holidays and weekends. We know the head shape & size varies on different people.The item "Youth Full Face Motorcycle Helmet Kids Bike Black Blue Green Orange Pink Red YLW" is in sale since Thursday, February 27, 2014. This item is in the category "eBay Motors\Parts & Accessories\Apparel & Merchandise\Helmets & Headwear\Helmets". The seller is "shineyangtang" and is located in Hinsdale, Illinois. This item can be shipped to United States.