From Melvor Idle
This page is up to date (v0.15.4).

The Defence skill increases the player's melee, ranged, and magic evasion rating. Defence experience is primarily earned by using the Block Attack Style during Combat. 0.4 XP is awarded per point of damage done to enemies when using the Block Attack Style. Using a mixed attack style will award 0.2 XP per point of damage done to enemies. Using the Gold Emerald Ring will increase Defence experience earned by 7%. Raising defence to level 99 will unlock the Defence Skillcape for purchase from the Shop. Equipping the Defence Skillcape will increase the player's defence bonus by 19.

 Armour Materials

Each armour material requires a certain Defence level to be equipped. Below is a table detailing which Defence level is required for which armour material.

Level Requirement Material
1 Bronze, Iron, Slayer (Basic)
5 Steel
10 Black
20 Mithril
30 Adamant, Slayer (Strong)
40 Rune, Ice
60 Dragon, Slayer (Elite)
70 Ancient
85 Terran God, Ragnar God

Melvor Idle version v0.15.4 (Released: 26th June 2020)
Attack (skill).svg Attack
Strength (skill).svg Strength
Defence (skill).svg Defence
Hitpoints (skill).svg Hitpoints
Ranged (skill).svg Ranged
Magic (skill).svg Magic
Prayer (skill).svg Prayer
Slayer (skill).svg Slayer
Woodcutting (skill).svg Woodcutting
Fishing (skill).svg Fishing
Firemaking (skill).svg Firemaking
Cooking (skill).svg Cooking
Mining (skill).svg Mining
Smithing (skill).svg Smithing
Thieving (skill).svg Thieving
Farming (skill).svg Farming
Fletching (skill).svg Fletching
Crafting (skill).svg Crafting
Runecrafting (skill).svg Runecrafting
Herblore (skill).svg Herblore
Guides: Man (thieving).svg Beginners Guide Question.svg FAQ Bank Slot (upgrade).svg Bank Combat.svg Combat Mastery.svg Mastery Coins.svg Money Making Shop header.svg Shop Easter.svg Easter Eggs
Reference Tables: Items, Equipment, Experience Table, Upgrading Items, Chest Loot Tables, Monsters, Monster Loot Tables