Adamantine Studded Leather

While wearing this armor, you gain a +1 bonus to AC. You can also use a bonus action or reaction to speak the armor's command word and cause the armor to cause you to become immune to critical hits. Any critical hit becomes a normal hit. This effect lasts until the beginning of your next turn, and cannot be used the subsequent turn. 

Made from tough but flexible leather, studded leather is reinforced with close-set rivets or spikes.

Notes: Bonus: Armor Class, Utility, Combat, Deception, Warding