Lightweight, cool, comfortable, and classy.  Casual enough to wear with sandals, but nice enough for a nice dinner or show.  I like also that they are loose in the leg (I hate tight pants!).  I have bought three pairs, and all three are great.  I wear 30x30; I simply ordered 30x30, an they ended up being the correct size.  The pants definitely shrink when washed (especially in length), but they come too long and then shrink to fit after one or two washes.  Just keep them away from the dryer.