One of the most unique and seemingly unrealistic aspects of Spider-Man's costume is the way his eye lenses change shape to express his personality. Though it's been rendered in comic books basically since Spidey's earliest adventures, the effect is usually rendered in live-action through the use of CGI, when it happens at all.
Now, cosplayer Cavin Creations has built a Spider-Man mask with fully functional hands-free lenses that move just like Spidey's eyes in comic books.
Check it out:
Finally it's done, completely hands-free control pic.twitter.com/1Y0nOw4AtS— Cavin Creations (@CavinCreations) May 25, 2018
The effect is achieved through a control mechanism in the mask's jaw, which, when shifted, can control the movement of the eyes.