Usually I buy Calvin Klein brand in a large and they fit awesome.  These I noticed however were a lot cheaper than the Calvin's so I thought I'd give them a try.  First of all the material is really soft and nice.  I bought them in the same size, a large but I noticed the waist band seems shorter, maybe the rise, and especially the bottoms are a lot shorter then the Calvin's (about 3 in.).  My ankles are a bit exposed if I move.  They are okay, but I know now where the savings comes from.  If you are tight on cash these will do, but will not be my first choice. edit 2/18/13- ok, I had these for a bit and the material is so stretched out.  They do not retain their shape.  I ended up having to go and buy a pair of Calvin Klein's anyway.