The Joovy Groove Ultralight is made with lightweight aluminum. It can hold a weight of the baby up to 55 pounds. <br /> <br />The constructions of the stroller are robust. So the frame does not flex inward when you kids become heavier. Some ultralight stroller inclines to do so. Further more visit here-http://www.strollered.com/joovy-groove-lightweight-travel-umbrella-stroller-review/
