Levi's Jeans Style Number Explained From 501 to 541 - InsideHook
Levi's Fits Explained - 504 Regular Straight | The Levi's 504 Regular Straight Jeans are a modern take on a timeless, classic style. Find out about the fit in this 'fits explained'
A Guide to Each of Levi's Jeans Fits for Women | Who What Wear
The Complete Buying Guide to Levi's Jeans: All Fits, Explained