• The Boreal Guard
• Item Level 226Disenchants into:
  [Abyss Crystal]: 1-2
• Binds when picked up
  
• Shield
• Off Hand
• 7890 Armor
• 221 Block
• +53 Strength
  +86 Stamina
• Blue Socket
  Red Socket
• Socket Bonus: +6 Dodge Rating
• Durability 120 / 120
• Requires Level 80
• Equip: Increases defense rating by 33.
  Equip: Increases your shield block rating by 31.
• Sell Price: 13 63 25

Source

This item can be found inside Rare Cache of Winter after defeating Hodir on hard mode in the 10-man version of Ulduar.

Patch changes

•  Patch 3.1.0 (2009-04-14): Added.
  

External links

• Battle.net (EU)
• Wowhead
• Thottbot
• WoWDB