Armours are very useful in Dead frontier especially when you go further into the city. Each armour has its own duribility(HP of armour). When you armour is broken you should go back to the base or holdout and fix it ASAP. Armours can be loot in the city about 30% chance.
TIP: The higher the level you are buy a better armour. e.g. Lv 1-10 Sports Armour, Lv 11-19 Kelvar Vest.