We developed all of our strollers to have an ideal handlebar height. While there's no way to truly develop the perfect height, we tried to take into account all of the issues that shorter or taller people encounter with strollers.
So, first we recessed the axles on all of our strollers. One off the biggest issues for taller people is kick space. They kick the rear axle of the stroller all the time. By recessing the axle, we can put the handlebar at an optimal height for everyone while increasing kick space and alleviate the issues of axle kicking.
Next, handlebar height. Our test group ranged from under 5' all the way up to 6' 7". The very shortest and tallest of our testers knew that the handlebar height couldn't be perfect for them, but helped us develop certain angles, grip materials, and grip angles which would make our strollers truly comfortable for the outliers while still perfectly comfortable for people with average heights. Based on feedback from all three groups (short, average, and tall) of customers, we feel we have achieved this awesome goal in our handlebar design without sacrificing the added costs and weight of an adjustable handle.