How to use Minecraft under the surface skin ?

Learn how to download and apply the under the surface skin for Minecraft on PC (Java Edition) or Pocket Edition (PE).
PC (Java Edition):

1. Go to the Minecraft website and login to your account.
2. Click the “Minecraft Java Edition” dropdown menu and select “change skin”.
3. On the next page, click “select file” and upload the under the surface skin file.

1. Open the game app and press the “dressing room” button on the main menu screen.
2. Press “Edit Character” -> “owned skins” -> “choose new skin” and upload the under the surface skin file.

Does this skin have thick or skinny arms?

This particular under the surface skin has thick (4px) arms. It is based on the classic Steve model.

What color is this under the surface skin skin?

This particular Minecraft under the surface skin has the following color palette:
Black
Conifer
Deep Oak
Half Spanish White
Sambuca