Oh my goodness Ann! My 7 year old DS weighs 48. My almost 4 year old DD weighs maybe pushing 40. He is a BIG boy. smile

We got both kid bikes we have at REI. They are really nice bikes. Especially the geared/hand brake 20" we just got. We actually do go out and ride as a family for a couple hours at a time (with DD in a burley trailer).