I have this version and in the small format rule book at various places it mentions people having armour. However there are no rules that I can find in the book for armour. The contents at the front of the book list under the Wargear section Shield . . . . . . 46 Armour . . . . . . 46 Elven Cloak . . . 46
Yet on page 46 the rules just describe Shields and then Elven Cloaks.
Armour raises a character's defense. Normal armour (light plate or leather) raises a character's defense by 1, and heavy armour raises a character's defense by 2 (or by just 1 more if the character's stats already include normal armour in its base profile).