Don't get me wrong, I think the invention is great even if a few issues such as landing on your face aren't quite sorted out. What I want to discuss is the video. I was enjoying it until they started saying things like 'no-one expected girls to be able to do this'. Total face-palm. Way to promote the stereotype.
But there is a broader issue here. Being female has nothing to do with it and they are unknowingly reinforcing the idea that a woman has to be somehow 'special' to achieve something like this. The message definitely got confused for me, especially when they started showing images of the shoes they were wearing. I mean... what!?
I'd like to know who these mysterious people are who think women can't do things... because as far as I can tell they don't exist. As far as I can tell it's only ever women who say 'no-one expected us to do this because we're women'. This is my whole problem with a lot of 'women in science/engineering' stuff. By making out like there's something special about your achievements because of your gender, you're undermining the whole achievement.
This attitude of 'well obviously, if I were a man this would have been easy, but because I'm a woman, it was hard' is not OK in situations where gender makes no difference - like doing technical work, designing new products, running a business etc...
Making out like this is gender-related also belittles discussions about things which really do make a difference to careers that really are different for men and women. Things like having to bear children in your womb, for instance.
A decent idea... with strange marketing.