# Sleeves

When VitaLife unveiled their Persona Core technology that allowed people to digitize and transfer their consciousness into other vessels, human bodies became nothing more than 'sleeves' for the human consciousness.
This technology thus became known as "Sleeve technology".

Sleeve technology unlocks two different gameplay features:

- Duplicate Sleeves
- [Grafting](grafting.md)

Sleeve technology is unlocked in [BitNode-10](bitnodes.md).

## Duplicate Sleeves

Duplicate Sleeves are MK-V Synthoids (synthetic androids) into which your consciousness has been copied.
In other words, these Synthoids contain a perfect duplicate of your mind.

Duplicate Sleeves are essentially clones which you can use to perform work-type actions, such as working for a [Company](../basic/companies.md) / [Faction](../basic/factions.md) or committing a [Crime](../basic/crimes.md).
When sleeves perform these tasks, they will earn money, experience, and [Reputation](../basic/reputation.md).

Sleeves are their own individuals, which means they each have their own experience and stats.

When a sleeve earns experience, it earns experience for itself, the player's original consciousness, as well as all of the player's other sleeves.

Duplicate Sleeves are **not** reset when installing [Augmentations](../basic/augmentations.md), but they are reset when switching [BitNodes](bitnodes.md).

## Obtaining Duplicate Sleeves

There are two methods of obtaining Duplicate Sleeves:

- Destroy [BitNode-10](bitnodes.md).
  Each completion gives you one additional Duplicate Sleeve.
- Purchase Duplicate Sleeves from The Covenant.
  This is only available in [BitNode-10](bitnodes.md).
  Sleeves purchased this way are **permanent** (they persist through [BitNodes](bitnodes.md)).
  You can purchase up to 5 Duplicate Sleeves from The Covenant.

## Synchronization

Synchronization is a measure of how aligned your consciousness is with that of your Duplicate Sleeves.
It is a numerical value between `1` and `100`, and it affects how much experience is earned when the sleeve is performing a task.

Synchronization can be increased by assigning sleeves to the `Synchronize` task.

## Sleeve Shock

Sleeve shock is a measure of how much trauma the sleeve has due to being placed in a new body.
It is a numerical value between `0` and `100`, where `100` indicates full shock and `0` indicates no shock.
Shock affects the amount of experience earned by the sleeve.

Sleeve shock slowly decreases over time.
You can further increase the rate at which it decreases by assigning sleeves to the `Shock Recovery` task.

Let `X` be the sleeve's recovery ratio (calculated as `(100 - shock) / 100`), and `Y` be the sleeve's synchronization ratio (calculated as `synchronize / 100`).
When performing a task would give you `A` experience normally, the sleeve gains `A * X` experience instead.

The player’s original host consciousness earns a fraction of the experience the sleeve gained, namely `A * X * Y`.

Other sleeves also earn the experience. However, their own shock affects this gain.
Let `Z` be the receiving sleeve's recovery ratio. It earns `A * X * Y * Z` experience.

## Augmentations

You can purchase [Augmentations](../basic/augmentations.md) for your Duplicate Sleeves.
In order to do this, the sleeve's shock must be at `0`.
Any [Augmentation](../basic/augmentations.md) that is currently available to you through a faction is also available for your Duplicate Sleeves.
There are a few [Augmentations](../basic/augmentations.md), such as NeuroFlux Governor and [Bladeburner](bladeburners.md)-specific ones, that cannot be purchased for a Duplicate Sleeve.

When you purchase an [Augmentation](../basic/augmentations.md) for a Duplicate Sleeve, it is instantly installed.
When this happens, the sleeve's stats are instantly reset back to 0, similar to when you normally install [Augmentations](../basic/augmentations.md).

The cost of purchasing an [Augmentation](../basic/augmentations.md) for a Duplicate Sleeve is **not** affected by how many [Augmentations](../basic/augmentations.md) you have purchased for yourself, and vice versa.

## Memory

Sleeve memory dictates what a sleeve's synchronization will be when it is reset by switching [BitNodes](bitnodes.md).
For example, if a sleeve has a memory of `10`, then when you switch [BitNodes](bitnodes.md) its synchronization will initially be set to `10`, rather than 1.

Memory can only be increased by purchasing upgrades from The Covenant.
Just like the ability to purchase additional sleeves, this is only available in [BitNode-10](bitnodes.md).

Memory is a persistent stat, meaning it never gets reset back to `1`.
The maximum possible value for a sleeve's memory is `100`.

Buying memory has no instant affect on synchronization - memory affects only the starting synchronization upon entering a [BitNode](bitnodes.md).
