The A02.C02 was one of the uniforms that was used by Imperial Agents during the Great Galactic War

Great Galactic War Event Great Galactic War (3681BBY - 3653BBY)

and beyond.
Essentially, this was a gray jumpsuit for those who needed speed and agility. While providing modest protection to the wearers, it did not restrict their movement. Additional equipment included a small high-tech backpack, a alternate belt with several pouches, and a pair of shoulder pads.