This summer became the first season that I started to use a sun umbrella for me.
Until last summer I used to put on a hat, but it was not feeling well.
Putting on the hat certainly interrupts direct sunbeam, but I sweated and filled with heat in my hat.
Using the sun umbrella gets rid of those troubles though.
While I use it, I notice a problem that is hard to use it occur in certain situation.
It's not the same direction sunbeam and wind, in particular quite opposite case.
If I turn the sun umbrella to sunlight, it may be broken by the wind.
And, if I turn the sun umbrella turns to the wind, I'll get the sunlight directly.
I'll have in dilemma.
In the rain case hardly occurs like these, so I feel interested in these things.
