The United States Skin is one of the 66 playable Skins in Slither.io. It used to be only accessible if you shared the game on Facebook or Twitter or ran setSkin(snake,9).
The skin represents a country, The United States of America or the USA, which is a country in North America.
It has red and white stripes, and blue with stars embedded in it.
United States | Russia | Germany | Italy | France | Poland | Rainbow | Sweden | Finland | Denmark | White | Green/Purple | Brazil | Ireland | Romania | ArcadeGo | Block | Yellow/Grey | JackSepticEye | Lithuania | Black/Yellow | Lavender/Indigo/White Star | Light Blue/White Star | Indigo/White Star | Orange/Black | Google | Red/White/Pink | Blue/White/Periwinkle | Kwebbelkop | Golden | PewDiePie | Jelly | Slogoman | Google Play | Red/Periwinkle | Silver | Canada | Switzerland | Moldova | Vietnam | Argentina | Colombia | Iceland | Spain | Blue Gradient | Red Gradient | Yellow Gradient | Orange Gradient | Magenta Gradient | Green Gradient | MasterOv | United Kingdom | Multicoloured Gradient | Bonkers | Red/Black | Blue/Black | FGTeeV |