Champion's Dragonhide Headguard

The Champion's Dragonhide Headguard is the leather helmet of the Horde PvP-Rare Druid set called the Champion's Refuge.

Source
This item can be purchased from First Sergeant Hola'mahi located in the Hall of Legends in Orgrimmar. It costs 6375 Honor Points and 30 Alterac Valley Marks of Honor.