The Petalknight Cloak is an armor that requires Level 33 to be worn.
It is mostly green, with a few dark colors around. The most prominent part is the sun figure on the chest. This armor was most likely a reference to Solaire's Armor from Dark Souls 2
It is debatable whether to use the DragonSkull Robe or Petalknight Cloak, this is because of the Health Regen / defense values. Also, some users use Necromancer's Cloak instead of Petalknight Cloak, due to the Defense-Regen debate. Though many people say Petalknight Cloak is better as it is more valueable and rare.