This is an extension for a pusher handlebar. It will save the backs of tall caretakers and caretakers who use a "buggy-board" (a skateboard for a toddler that clicks onto a stroller for when you have a second child, the toddler rides on the board in front of the mothers feet). It needs to fit a variety of handlebars of different brands (needs to slide out to different sizes and have attachments that fit a range of handlebar sizes), needs to be lightweight (so as not to affect the...