Jerkin of Fortified Skin

Armor Leather Torso

Item Details

Utility 49.33
Bonus Level 31
Dyeable Yes
Sellable Yes
Tradeable Yes
Armor Info
Armor Factor 100
Base Quality 95%

Restrictions

Level Required 50
Usable By
All Classes

Magical Bonuses

Basic
Strength 22
Hit Points 80
Constitution 22

Primary Ability

Damage Add Level 50
Reactive Proc


Raw Item JSON

{
  "type_data" : {
    "absorption" : 10,
    "base_quality" : 95,
    "clamped_armor_factor" : 100,
    "armor_factor" : 100
  },
  "sell_value" : 37718,
  "requirements" : {
    "level_required" : 50
  },
  "sources" : {
    "monsters" : {
      "normal_drop" : [ "Apologet Nesnuir" ]
    }
  },
  "bonus_level" : 31,
  "icon" : 280,
  "flags" : {
    "dyable" : true,
    "emblemizable" : false
  },
  "utility" : 49.33333333333333,
  "delve_text" : "Realm: Midgard\n \nMagical Bonuses:\n- Strength: 22 pts\n- Constitution: 22 pts\n- Hits: 80 pts\n \nLevel Requirement: 50 Level\n \n \nMagical Ability:\nFunction: damage add\n \nTarget's melee attacks do additional damage.\n \nDamage: 11.3\nTarget: Self\nDuration: 30 sec\nCasting time: instant\n \n- Spell has a chance of casting when this armor is hit by an enemy.\n \nArmor Modifiers:\n- 100 Base Factor\n- 10% Absorption\n- 95% Quality / 85% Condition\n \n- Effective Armor:  89 Factor\n \n \nBonus Level: 31\n",
  "slot" : 5,
  "abilities" : [ {
    "spell" : 3830,
    "magic_type" : 2,
    "power_level" : 50,
    "position" : 1
  } ],
  "artifact" : false,
  "salvage_amount" : 36,
  "material" : 70,
  "usable_by" : [ 0 ],
  "name" : "Jerkin of Fortified Skin",
  "realm" : 2,
  "id" : 23125,
  "dye_type" : 0,
  "category" : 2,
  "bonuses" : [ {
    "id" : 0,
    "type" : 1,
    "value" : 22
  }, {
    "id" : 2,
    "type" : 1,
    "value" : 22
  }, {
    "type" : 4,
    "value" : 80
  } ],
  "ability_tags" : [ "fn_dmg_add" ]
}
How is utility calculated?