Changing my rating from 5 to 4.  Why?  For some reason, after you've worn this type of underwear, it begins to develop an unusual odor, sort of like a plastic smell.  Washing reduces the odor, but the older they get, the less the washing does anything to resolve the problem.  I'm convinced it's the material itself.  It appears to lock in this unpleasant smell (smell which does NOT happen with 100% cotton underwear -- so while they feel wonderful to wear, this will become a problem.

FINALLY!  A GOOD feeling set of underwear.  This brand is gorgeous.  The material is silky soft, and it breathes so well you can be covered up with a blanket while sleeping and NOT have sweat in all the wrong places!  When you're walking around with your street clothes on, you cannot even FEEL these underwear.  They are absolutely "got to have" in my book.

I have no problem with bunching up while walking on a hot summer day, as this underwear glides across the skin like a couple of eggs in a Teflon frying pan. (no friction at all)

About the only issue I can mention is that when you're pulling up your long pants, sometimes the underwear might get pulled past your waistband, requiring some adjustment.  But that is a price I am VERY willing to pay, to have something that feels this good!