Vessel Fragment

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Vessel Fragments are Items in Hollow Knight that increase the Knight's maximum SOUL.


Main article: Soul Vessel

Vessel Fragments are parts of Soul Vessels. 3 Vessel Fragments complete a Soul Vessel and increases the Knight's maximum SOUL by 33. When the main Soul meter has empty space, any SOUL stored in the Vessels will automatically fill up the main meter after a short delay.

The Nail acquires SOUL for the Soul Vessels at a reduced rate, only providing 6 SOUL.

  • The Soul Catcher Charm increases this to 8 SOUL.
  • The Soul Eater Charm increases this to 12 SOUL.
  • These effects stack, giving 14 SOUL if both are equipped.

All other sources of SOUL do not fill Soul Vessels at a reduced rate, instead filling them at their normal rate.

With a total of 9 Vessel Fragments in the game, 3 Soul Vessels can be acquired, doubling the maximum amount of SOUL that can be carried (99 + (33 x 3)).

How to Acquire

There are a total of 9 Vessel Fragments to be found in the game:

Source Conditions / Requirements Map
1. Bought from Sly in Dirtmouth for Geo.png 550
  • Shop description:
A piece of a Soul Vessel. You know, those ghastly looking orb things?
I don't really like the aura about it, but it's quite rare so I'll have to charge you a high price.
n/a Mapshot HK Simple Key 1.png
2. Bought from Sly in Dirtmouth for Geo.png 900
  • Shop description:
I dug out another of these. Turns out I had a complete set. If they didn't give me the creeps, I'd put the pieces together myself.
Shopkeeper's Key
3. Found in Greenpath near the inaccessible Queen's Gardens entrance n/a Mapshot HK Vessel Fragment 02.png
4. Left of the lift in Forgotten Crossroads Unlocking the lift in the City of Tears Mapshot HK Vessel Fragment 03.png
5. Found above King's Station near a lift n/a Mapshot HK Vessel Fragment 04.png
6. Found in Deepnest above the working tram n/a Mapshot HK Vessel Fragment 05.png
7. Found at the beginning of the Stag Nest Opening all Stag Stations Mapshot HK Vessel Fragment 06.png
8. Given by the Seer Collecting 700 Essence Mapshot HK Seer 01.png
9. Found in the fountain in Ancient Basin Dropping Geo.png 3000 into the fountain Mapshot HK Vessel Fragment 08.png


Achievement Soulful.png Soulful
Acquire 3 Vessel Fragments.
Achievement Worldsoul.png Worldsoul
Acquire all Vessel Fragments.


  • While the fountain in the Ancient Basin will always ask "Drop all Geo into the fountain?", only a total of Geo.png 3000 will be added. Any extra will not be subtracted.
  • The music heard after acquiring three Vessel Fragments originates from a short sample track that was posted when Christopher Larkin was hired as the game's composer.[1]
  • There are unused sprites found in the game files which suggest that a Soul Vessel originally consisted of only two Vessel Fragments, showing two halves which needed to be collected to acquire a full Soul Vessel. The "Ferocious Foes" trailer also shows Sly selling one half of a Soul Vessel.[2] This was changed to three fragments for the final release.
    • This might be why Sly still refers to his two Vessel Fragments as being a complete set.
    • This also explains why the statue of the Pale King by the fountain in the Ancient Basin is holding half of a Soul Vessel, instead of a third.
Early half Vessel Fragment sprite


  1. Kickstarter update of March 6th, 2015.
  2. Ferocious Foes trailer.