I just purchased four pairs of 505 Straight Fit Jeans in four colors. "Rinse" was heavy jean material, what I feel most people think of when they buy 501's(button fly) or 505's(zipper). The fit on the jeans is not like 501's. It is more of a mid rise not at the natural waist, but not to low( but I guess it depends on one's torso length too).  We ordered the 34x30. Fit was snug in thighs and waist. Fume colored was made of a thinner denim material fit the same as Rinse, but these are great looking jeans. They look designer. Like my son's Lucky Brand or Calvins. We will get these in a 36 at the store. Revolver was a grey color soft jean(like an old pair of 501's)the waist was more like a 36 and lenghth was more like 33. The revolver jean had on the back right thigh area discolored like bleached folded line. Silt is like a very light green khaki soft jean we decided to keep . I ordered on line because it is hard to find 34x30's. I should have listenend to the other reviews, but you don't think it will happen to you. Go to your local store to try them on and don't order on line.  The fact that all four pairs were made in three different countries(Mexico, Nicaragua, Cambodia) probably explains the difference in sizing,material and length. Good Luck if you order online.