User blog comment:The Heir of Isildur/Best Mage Gear in Oblivion?/@comment-7079580-20130405093522

Mankar Camoran's robes can be found on his corpse in paradise. Since you're above level 18 the enchantments will be as follows:

Reflect Damage 10%

Spell Absorption 20%

This makes them extremely useful for mages, especially those using the Atronach stone as The enchantment will enhance the spell absorption qualities of The Atronach. Visually, They are identical to Arch- Mage robes, But they will show any amulet worn.