Actually it is, that's why I love it so much! Not the Tyvek ones which are heavy and don't breathe well. Air goes right through the spun polypro, but bugs can't, and in fact sweat forms and evaporates on my skin better than it does when it's covered with oily repellents (even natural ones).
I live in the country, and often times in hot weather I'll do my gardening wearing the coverall and nothing else.

