Hi, this is a fantastic invention and hunting.
So far, no problem has been solved by a wet umbrella problem, and this is in many situations a problem, as entering a car, a trade, and so on.
Like many times, the solution is perfectly simple: folding the umbrella is so that the wet damp part closes in yourself and there
will to stay moisture.
The solution is as simple as a wheel : the material is in the form of a perfect circle that rotates with smallest resistance (ground friction) because the contact surface with the substrate is minimal.
Sretno s lovom.
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