Sling TV is giving away some free Lucha Underground masks. 21 masks to be exact. The giveaway is part of their promotion of the season premier of Lucha Underground which takes place tomorrow night on El Rey.

El Rey is available to stream on either the Sling Orange or Sling Blue packages. Sling offers a free 7 day trial for those wishing to give it a try. You can check out their packages here, and add to your Roku here. Sling also has a couple deals for a free Roku 2 or a discounted Roku 3 which you can check out here.

To enter the contest you can click here. They are taking entries though 09/07/16, 11:59 PM MT.

For those unfamiliar with the show IMDB describes it as, “Lucha Underground is a professional wrestling promotion and serial drama television series produced by the United Artists Media Group. The weekly series airs in English on the El Rey Network and in Spanish on UniMás, featuring wrestlers from the American independent circuit and Asistencia Asesoría y Administración.”

You can check out the giveaway mask below: