The second layer can be used to give the character glasses, hats, or other accessories (even a bigger head).
Skins with slim arms have 3,136 pixels, with 1568 pixels on each layer. There are a total of 3,264 pixels that can be customized, with 1,632 on each layer. Skins are divided into areas that act as the surface area of the character (for example, the front head area, left leg area, etc.).