I have been wearing Men's 501 for more than 30 years.  It is nice to be able to find the Originals on Amazon.  These are the real deal.  Shrink to fit.  Very stiff. Softens and only gets better over time.  I own a farm and garden in these jeans every day.  After the knees start to wear I make them into cutoffs.  For gardening, rose pruning, digging in the dirt there are no better pants. I know my size because I have been wearing this size forever but I am 5'4" tall weight 108 lbs and wear size 29W 34L. I used to wear 29W 33L but Levi's seems to have discontinued the odd sizes.  34L works fine.