You can change the previewed race by clicking on the arrow below the picture on the armor's page. *according to the comments, you get all three colors of the Mag'har Orc's armor

Tauren: (the big totem is a cloak: Totem de chef ancestral).

They value both personal freedom and creative expression, demonstrating neither love of leaders nor desire for followers. Half-elves share the chaotic bent of their elven heritage. They live much longer than humans, however, often exceeding 180 years.

Blood Elf: (Questline starts in Orgrimmar: La fierté des Sin’dorei) Half-elves mature at the same rate humans do and reach adulthood around the age of 20.

Dwarf: (Questline starts in Stormwind: Garder les pieds sur terre).

Visit the Embassy to find the quest giver ( Stormwind / Orgrimmar). Throughout your journeys across Azeroth, you have achieved mastery over the forces that constantly seek to control you. Older/main races may complete a quest chain to get their heritage armor (level 120 and exalted with their matching faction possibly additional requirements, depending on the race). Meet Alleria Windrunner at Telogrus Rift. Once earned, you can use this transmog on every alt of that race. The ones of allied races require to level up one character of that race without a level boost (heirlooms are allowed) and gain the achievement (like C’est en sancteforgeant qu’on devient…).

Void elf heritage weapons