The BABYZEN YOYO Connect converts your YOYO² into a double stroller. With a single click, this accessory hooks onto the back of your YOYO² stroller so you can conveniently use it for twins or close-in-age siblings. The stroller has 5 different possible setups accompanying you, from birth to toddler. Once folded, YOYO connect is designed to be hooked up to the back of YOYO² using two hooks and a strap.