• Leggings of the Snowy Bramble
• Item Level 219Disenchants into:
  [Abyss Crystal]: 1-2
• Binds when picked up
  
• Leather
• Legs
• 511 Armor
• +83 stamina
  +80 intellect
• Blue Socket
• Socket Bonus: +4 spirit
• Durability 90 / 90
• Requires Level 80
• Equip: Improves critical strike rating by 52.
  Equip: Improves haste rating by 69.
  Equip: Increases spell power by 124.
• 
• Sell Price: 10 17 84

Source

Contained in Champions' Cache after defeating the three faction champions in mounted and hand to hand combat in Trial of the Champion in heroic mode.

Patches and hotfixes

• Patch 3.2.0 (04-Aug-2009): Added. 
  

External links

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