A suit of armor with this enchantment normally has a reddish hue and often is decorated with a draconic motif. The armor absorbs the first 20 points of heat damage per round that the wearer would normally take (similar to the Resist Energy spell).
Caster Level: 7th
Requirements: Craft Magic Arms and Armor, Resist Energy
Price: +42,000 gp.
Dungeon Master's Guide v.3.5
About Magic Armor