Could you please provide the measurements of a large boys and medium boys chest, length, and arm length?
SunnySports S Here is a link to a sizing chart by North Face that has all the measurements for boys sizes. I hope that helps. http://www.thenorthface.com/webapp/wcs/stores/servlet/TNFSizingChartPOPWindow?langId=-1&storeId=207&sizeCode=OUYB Stay safe and have fun out there! Neal