Dreadnaught Sabatons

The Dreadnaught Sabatons are the Tier 3 plate feet armor for warriors and gives bonuses to strength, stamina, dodge, and overall defense. It is available through quest items in Naxxramas.

Source
The Dreadnaught Sabatons are a quest reward from the quest Dreadnaught Sabatons (quest) which starts with Korfax in Light's Hope Chapel in Eastern Plaguelands. To complete the quest, you must turn the following items to Korfax:
 * 1 Desecrated Sabatons
 * 12 Wartorn Plate Scrap
 * 2 Arcanite Bar
 * 3 Cured Rugged Hide