Update: This sale has ended.
Use the code FRIEND30 to take 30% off your entire order plus free shipping at Levi's. The code does not seem to have a minimum or maximum. For example, this $26 pack of boxer briefs is $18.55 with the code, whereas it'd be $34.50 (with $7.95 shipping) without it. This offer is only good for today, Sept 25. You can also use it in-store but not at outlets.