Use the code LUVMOM20 for 20% sitewide (excludes Crocband) at Crocs.com. Plus stack it with code springfreeship to also get free shipping. The codes also work on outlet items.
Go through Ebates and you can get an extra 4% cash back. Plus, if you are a new member, you will also get and additional $5 bonus for signing up.
This code is good through Friday at midnight.