The city mini zip features a fold that is an impressive 50 smaller than an umbrella stroller with baby joggers patented quick fold technology this stroller folds in just a push of a button and pull of a strap it really is that simple it folds three dimensionally so you only have to use one hand the zip makes light work of getting around town with its petite 5 5 front wheels that swivel around for a daily obstacle course or lock for long distance strolling with its lightweight design