Hooded Thalmor Robes

These robes are typically worn by the Thalmor.

All Hooded Thalmor Robes reduce the spell cost of Destruction magic by 12%. They cannot be enchanted by the player, even through the "playerenchantobject" Console command.

Perks
Functioning as clothing, the Hooded Thalmor Robes allow the Alteration perk, "Mage Armor" to double the effects of Flesh spells, such as Oakflesh and Stoneflesh.

Locations
For those of you wanting to find a full set of the robes, boots, and gloves early in the game just follow these directions. A set is also dropped by Ancano, after his defeat in the quest, The Eye of Magnus. There is a full set of robes, including boots and gloves, that can be found in the Thalmor Embassy during the main story quest, Diplomatic Immunity. Whats more, if the player is a Altmer and wearing the robes they may be able to complete the entire quest Diplomatic Immunity without any fighting until you get into Elenwen's Solar at the embassy.
 * 1) After exiting the cave with Hadvar or Ralof follow the path until you come to a sign.
 * 2) At the sign turn left and follow that path until you see a dirt path ahead of you going up a small hill.
 * 3) Go up this dirt path and you will find a Shrine of Talos with the dead bodies of worshipers and a Thalmor body with the robe, boots, and gloves.