This? Well, it's a coat of armour. The idea is to put it over your t-shirt so that it doesn't get dirty. It also helps you resist blows.
Reduces the damage you take from weapon attacks and pet attacks by 10% - 50%, to a minimum value of 1 if damage is successfully inflicted. Unlike the Shield, Armour cannot be disarmed by the Impact specialty or a lucky blow from an opponent's weapon.
The Skill is really useful in the lower Levels, you can even hold 3 Bump hits and still win the fight. And the normale fist Damage is only 2-4, 9/10.