Fantastic product.  Best on the market.  Ive got multiple pairs and they hold up, keep their shape and they don't fade or get scraggly from the dryer.  If you work outdoors or on your feet a lot these are lifesavers.  They are not compression but give you more than regular underwear - highly recommend.  Ive owned every brand, a close second would be adidas climalite but these are better and these unlike adidas have a fly.