I work in the oilfield in west Texas, it’s hot often here. All and all I liked the fit initially, but the more I move around the legs seem to bunch up. Not an issue so much while doing most activities, while driving tho it’s become an issue, lack of ventilation. 
To be completely honest the material makes me sweat more it seems. 
I like the feel of the material but it doesn’t allow for much air flow.