The coat in Blox Fruits is usually the Coat accessory from the Vice Admiral in Marine Fortress. You need to reach the First Sea Marine Fortress, fight the Vice Admiral boss, and hope for the drop; one source says it is a 5% chance, while another video says 10%, so the exact rate may vary by source or version.

How to get it

  1. Go to Marine Fortress in the First Sea.
  1. Find and defeat the Vice Admiral boss.
  1. Repeat the fight until the Coat drops, since it is not guaranteed.

Useful details

  • A guide recommends being around level 130 before farming it, because the Vice Admiral is a level 130 boss.
  • The Coat gives 200 energy and 10% more melee damage.
  • It can change appearance depending on your team, which makes it a bit unusual compared with other accessories.

Fast farming tip

If you do not get it quickly, keep rejoining servers and refighting the Vice Admiral to speed up attempts, since the drop is random.

TL;DR

Go to Marine Fortress, beat Vice Admiral, and keep farming until the Coat drops.