You gain additional benefits when using a buckler.
Prerequisite: Shield Proficiency
Benefit: You can perform a shield bash with a buckler. When wielding a weapon in the same hand as your buckler, you may elect to either ignore the −1 attack penalty or gain a +1 shield bonus to AC.
Special: A buckler counts as a light weapon and has the same weapon profile as a light shield.
Advanced Feats: The Cavalier’s Creed