The easy rider seems to have a consistent sizing.  I usually wear a 12 but ordered a 14 and these are my hang out and run errands jeans. I have a small waist larger rear and thighs and these are a good style for me.  The leg is straight, no contour.  Leg opening is not too narrow or wide.  They will fit over my boots but are not a flare type bootcut.  They do stretch out a bit.  I have the same style in a 12 that I wear for more dressy occasions but they are a little tight for watching a long movie or football game at home. They hit below the belly button and no gap in the back.