Conjuration (Creation) [Force]
Level: Force 1, Sorcerer 1, Wizard 1, Spell 1
Components: V, S, F
Casting Time: 1 standard action
Range: Touch
Target: Creature touched
Duration: 1 hour/level (D)
Saving Throw: Will negates (harmless)
Spell Resistance: No
An invisible but tangible field of force surrounds the subject of a mage armour spell, providing a +4 armour bonus to AC. Unlike mundane armour, mage armour entails no armour check penalty, arcane spell failure chance or speed reduction. Since mage armour is made of force, incorporeal creatures can’t bypass it the way they do normal armour.
Focus: A piece of cured leather.
Source: Player’s Handbook (Page 249)