The amazing Air Umbrella

I've seen many many bizarre umbrellas in my life, but this is by far the most unconventional one and, if it works, I really would like to have one!
Imagine the faces of your friends, when during a rainy day you draw an umbrella with no canopy... you push a button and a sheet of air becomes a barrier between you and the raindrops!



Don't worry if your partner has forgotten his umbrella the size of the air curtain is adjustable with a single-double selector and when the rain stops you can reduce the length and put it in a bag.
The authors of this clever design are Je Sung Park & Woo Jung Kwon.