Shield Gauntlet Style (Combat, Style)Source Armor Master's Handbook pg. 12
You use your gauntlet to shield you from harm.
Prerequisites: Weapon Focus (gauntlet or spiked gauntlet), proficiency with bucklers and light shields.
Benefit: When using this style, if you begin your turn wearing a gauntlet or spiked gauntlet on your off hand, and you are not using that hand to hold or make attacks with any other weapons or shield, you gain a +1 shield bonus to AC. You lose this shield bonus whenever you attack with your gauntlet or hold a weapon or shield in that hand. While receiving this shield bonus to AC, your gauntlet or spiked gauntlet is treated as a buckler for the purpose of using other feats and abilities (though you are also considered to have a free hand). This feat acts as the Improved Unarmed Strike feat for the purpose of satisfying the prerequisites of the Deflect Arrows and Snatch Arrows feats.