The only item missing from this Trek kids bike was welded in bosses for the mounting of a water bottle. The Giant had them low on the underside of the downtube, and my daughter wanted the new bike to have the cage down there as well, if possible. Using something new (to me...), I added them using rivnuts. If you want to see more about my experience of doing this (including photos), go to the General Cycling Discussion page, and look for the post entitled "How to add a water bottle cage - no threaded posts".