Originally Posted by cliffy109
I'm going to cut and paste another member's explanation for this. The reply was to a similar question in this thread in the equipment forum
by der_saeufer. This is the first time this concept has been explained to me in a way that made sense. It is making me re-examine my views on mesh.
Pasted from my followup in the other thread:
After re-reading my post today I do feel compelled to point out that mesh is NOT always a bad thing. If you're riding in town or doing some lower-speed riding (e.g. slow forest roads), that added airflow helps your sweat evaporate, especially where it's humid. When you're riding the slab across Arizona, though, too much of a good thing can literally kill you from heatstroke and dehydration. Mesh also helps evaporative cooling vests work better--you're trying to evaporate a hell of a lot more water with one of those than a sweaty t-shirt.