I usually wear a 32" waist in pants, so I ordered the Large size and they fit properly. The fabric is nice and smooth.  The fabric is a little thinner than other micro modal underwear I've felt, but they also seem cooler, so that's good, but I wouldn't want it any thinner. They're a little higher rise than I like (higher than 2xist no show briefs or CK hip briefs). The pouch is a little smaller than I'd like, but the twig and berries aren't smashed down as much as in some other brands (the pouch is closer to 2xist than CK). I wish the waistband was a little wider, although at least it's nice and smooth. Overall, I'd consider buying again if they hold up over time.