Walk and Stroll Umbrellas - To protect walkers from rain

As a mother I know how hard it is to go out for a walk with your children on a rainy day.  You can always buy a rain cover for a stroller but there are no accesories to protect the walker from the rain.  Its either a rain poncho or an umbrella in hand (very difficult to push stroller and hold).  

This stroller accesory will be universal so that it can be attached to most or all stroller brands.  The umbrella will be of clear heavy duty plastic and wind will be taken into consideration so that it doesnt wobble around etc.  Not sure yet if it will be one or two components and maybe adjustable to two heights.

I am in the very initial stages compared with other projects.  Any feedback would be greatly appreciated.  Ill try to post some pictures further down the line.