With 2000G worth of gem dust which the tattoo consumes it covers the entire body 

These tattoos will start to glow when an attack is sensed near by giving you extra defenses

Gain +4 AC only when you are not wearing any other armour or wielding a shield

The breastplate and shoulder protectors of this armor are made of leather that has been stiffened by being boiled in oil. The rest of the armor is made of softer and more flexible materials.

Notes: Bonus: Armor Class, Combat, Warding