How to use Minecraft Undefined skin ?

Learn how to download and apply the Undefined 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 Undefined 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 Undefined skin file.

Does this skin have thick or skinny arms?

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

What color is this Undefined skin skin?

This particular Minecraft Undefined skin has the following color palette:
Black
Mine Shaft
Shark
Storm Dust
Tundora