Famous kingdom of Númenor was once a blossoming island, given to men as a gift from the Valar. First people of Númenor were ruled by Elros the Half-elven, brother of Elrond, who chose to counted among men rather than elves. The downfall of the kingdom more than 3000 years later was survived by a few, but these men including Elendil carried the westernesse pride to further generations. Tryadelion's attire is a remembrance of the great Númenorean kingdom and deeds of its people.
Chest: Forveng Wraith's Plate, gold dye (drop from Barad Gularan; also available as Westernesse Steel Breastplate of Vigour)
Legs: Enduring Westernesse Steel Leggins of Fate, gold dye (world drop; also crafted)
Head: Tarchar, gold dye (Mirkwood barter item)
Shoulders: Westernesse Shoulder Guards, gold dye (world drop; also crafted)
Feet: Westernesse Boots, gold dye (world drop; also T4 crafted as e.g. West-Land Boots of Vibrance)
Back: Sergeant at Arms Cloak of Adlan, default dye (Skirmish barter item)