RAINGEAR

[TomK]

PS: i did my research and thats the reason why i have lots of rain gears because i bought all those recommendations. but still..... 

You have to admire a person who researched how to stay dry when it rains and bought a bunch of gears based on their own studies and other's recommendations. How about citing some of the studies you read? Here's one you must have read, and it's all about umbrellas:

https://iopscience.iop.org/article/10.10...acc9f/meta

"It is a common experience that raindrops falling vertically appear to fall at an angle to a moving person. When trying to describe the sheltered area provided by an umbrella from the viewpoints of both moving and stationary observers, at first glance it may appear that the descriptions for the sheltered area in these two frames are not identical. It is shown as well as illustrated by simulation that the sheltered areas are indeed identical in both these frames as expected. The physics behind this is explained and in the process confirming distances, angles, and consequently areas, remain invariant under a Galilean transformation. The detailed treatment of the problem given in this paper may help undergraduate students gain a robust understanding of the important concepts of frame of reference and Galilean transformation."