I have a simple requirement for all gear: I have to not notice it (ie....if it's a bike it doesn't squeak; if it's undies, they don't bunch up my butt....) These skivvies are awesome. They are the only undies I take for 10-day kayak expeditions and hut trips. Perfect for us active types who don't want sweaty undies. Did I mention you can throw them in the drier and not have to worry about shrinkage?
The curated 'sexy' undies are great too--super soft, just a bit of lace....and still, no butt crawling!