This are really warm and they aren't see through.  These could be worn as pants or under a long shirt, skirt or dress.  They are super soft and a little thicker than I expected.  Even with them being lined they aren't bulky.  They have a high waist, which isn't my favorite feature, but they still fit really nice.  Since they are seamless they almost look and feel like you aren't wearing anything.  I am somewhat modest... Only somewhat : ) I don't know if I would be able to wear these without something covering my tush.  I feel a little exposed!  LoL  Either way, these are nice and I would buy more.  They do smell like chemicals as some of the other reviews mentioned, so expect to wash before the initial wear.  They washed great, I only had them in the dryer for about five minutes and then laid them out to dry the rest of the way.