Mesh is BAD when it's hot!!!
From the link posted above:
Conventional wisdom is that mesh riding suits are best suited for such conditions because they maximize airflow over the skin. However, for the reasons explained below, maximum air flow is not what you need under these conditions.
Above 93°F, it’s a different world. The wind is no longer your friend.
For long distance riding in temperature higher than 93°F, you need to
(1) minimize your body’s exposure to direct wind blast;
(2) wear wicking undergarments, including a helmet liner;
(3) carry an adequate supply of cool water and drink frequently; and
(4) insulate any parts of your body expos
I take it a step further and wear a soaked shirt under my VENTED (not mesh) Jacket.
“Watch out for everything bigger than you, they have the "right of weight"