These briefs are great. I'm an Infantry ARMY Vet of too many years to count. In hot climates like Hawaii and Iraq I would sweat profusely to the point of being soaked through and through, and be forced to stay that way sometimes for days. It regularly got to the point where I would be rubbed raw in all the wrong places because of the excessive continuous moisture. NOT A GOOD THING! Then I discovered these briefs. In the OHIO ARMY NATIONAL GUARD, again in the Infantry, I started wearing these briefs, and didn't have the problem with excessive prolonged moisture build up anymore. I will never go back to cotton / polyester briefs again. I would give the briefs 5 stars if they weren't so expensive. Although they are less expensive than most other high tech ones. Nowdays I do a fair bit of rockclimbing, hiking, jogging, mountain biking, and backpacking. These briefs work even better for these persuits. Pros: Very comfortable, lightweight, excellent moisture management, dry quickly. Cons: Price, anti-stink formula doesn't work very well (nor do any others I've tried) must be washed by hand or they begin to pick badly. Summary: Overall, excellent briefs. This is my 9th pair. Only the first pair has fallen apart, due to washing in a top loading machine. I highly recomend.