My 15 yr old son and I both got Onewheel Xr’s for Christmas this past year. We already have about 400 miles on them…the things you do to hang with your kids. Not only is it great for balance but man is it fun to carve when the boat isn’t an option. However, I have broken a few ribs on the Onewheel…something I don’t have to worry about when surfing. My 21 mojo was shipped on Friday (maybe the last one out of the factory for 21’s?)…hoping it’s here by next week!!!