I bought these because my favorite old jeans that are worn out say they're 515s.  But these are different.  They're long enough for someone 5ft 6in, but when I bend, the butt slips down and uncovers my backside....the old ones never did that.  I kept the jeans because I need jeans, but won't buy againl.  Hope they soften after many washes to be the comfy jeans my old ones became and start to move with me.