Any piece of armour may be manufactured from wood, leather and steel, plus there are combisets of armour like brigantines, that are made of leather and iron. Every armour piece has a set of attributes that show its AC, deterioration level and various limitations. Your character must be very strong and have high vitality to wear a good mailshirt. Some armour types require high dexterity too. Weapons and armour may be repaired by smiths, though only friendly smiths will provide such a service.
Any damaged item loses several points of deterioration attribute after repairs are done.
This loss depends on the skill of the smith. Items that have deterioration level equal to zero are considered to be destroyed and cannot be repaired.