Assassin's Creed Mirage doesn't quite employ the extensive gear systems of its RPG predecessors, but there is still a decent number of options when it comes to what outfit to wear. The wardrobe Basim can collect throughout the game is largely comprised of robes resembling those traditionally worn by the Hidden Ones – often primarily white or off-white and hooded – but some, and particularly some costumes, have a bit more variety, including a few that are definitely more armored than Basim's default attire. The most exclusive outfit in the game, however, is disappointing compared to the verisimilitude offered by most others.
https://screenrant.com/assassins-creed-mirage-best-armor-milads-outfit/