Following his near-fatal duel with Obi-Wan Kenobi on Mustafar, Darth Vader received a mobile life support system encased in a suit of distinctive black armor. He wore a durasteel mask that attached to his helmet. The mask itself went halfway around Vader's head. The mask's appearance was given a similar appearance to a skull in order to enhance the fear factor of the Dark Lord of the Sith. The mask connected with a flat backpack that cycled air to Vader's lungs. Darth Vader is one of the most popular and instantly recognizable villains in cinematic history. Everyone will know you are a fan when you wear this Darth Vader's Mask Star Wars T-Shirt!