Every Jamis youth bike uses size-specific items like grips, saddles and cranks that enhance comfort and control by providing the best possible bike fit.Theyfocus on designing frames with low stand-overs to take much of the awkwardness out of getting on board and dismounting after. They trim as much weight asthey can with lightweight aluminum frames on many of the youth models and use aluminum parts where possible (the limiting factor here is working within a youth bike appropriate price point) to work towards that make-it-as-light-as-possible goal.