Battery-powered spider-man mask with glowing eyes. Put on this light-up mask to assume spideys super hero identity. Slide lever to lower the light-up eyes and power up the fun.fits most fan heads. With an adjustable strap, the spider-man glow fx mask fits most head sizes. Kids can put on spider-mans glow fx mask and imagine being spider-man and protecting the world from villains just like spider-man does.this mask is great for costumes and role play.this glow-effect mask is inspired by the web-slinging, wall-crawling super hero from the latest spider-man movie in the marvel cinematic universe.