Gladiator's Ornamented Legplates

Gladiator's Ornamented Legplates are plate leggings usable only by paladins, and are part of the Gladiator's Redemption, the Arena Season 1 set for paladins.

Source
This item is a PvP reward, and can be purchased for from  in Netherstorm.

However, with the arrival of Arena Season 3, this item, along with all other Season 1 items, has become available to be purchased through the Honor System.