Dialed frame fit
All Trek kids' frames are dialled with the proper length, standover height, and body position to make the bike more stable, and fit correctly as the child grows.
Dialed handlebar & stem
Each size bike has the appropriate length and width for its age range, combined with adjustable reach for just the right fit.
Each size bike has the appropriate size saddle for its age range, combined with the ability to adjust the height as the child grows.