Core Rulebok
Mage Armor
Gives subject +4 armor bonus.
Conjuration \ Creation [force] \
1-level
Save: Will negates
SR: no
Casting time: 1 standard action
Range: touch
Duration: 1 hour/lvl
Targets: creature touched
Componenent: V, S, F
Description
An invisible but tangible field of force surrounds the subject of a mage armor spell, providing a +4 armor bonus to AC. Unlike mundane armor, mage armor entails no armor check penalty, arcane spell failure chance, or speed reduction. Since mage armor is made of force, incorporeal creatures can’t bypass it the way they do normal armor.