I tested several pairs of cooing boxer briefs in my 105 degree Arizona heat as a delivery driver getting in and out of the car 50+ times a day. Lots of movement, sliding, walking and heat. The material was great at keeping cool and dry, truly "barely there" thin and breathable. Pouch was well tailored and almost kept things separated and comfortable without being overly tight. Mostly good things but one deal breaker for me. Had to return them as the Pouch tailoring does not effectively maintain separation. Champion Tech Performance won me over.