Atemis- Anti-Shield Sunglasses

Butler pulled a pair of sunglasses from his jacket pocket. They were
a little clunkier than the current style, and had tiny solar panels on the
arms.
“With fairies on our tail, we may need these.” Juliet plucked them
from his fingers, and the stimulus from the contact brought memories
flooding back.
Artemis made these from disassembled LEP helmets, so we could
see through Fairy shields. The LEP are sneaky, but Artemis is sneakier.
“I remember these glasses. Why did you even bring them?”
“Boy Scout rule number one: Be prepared. There are fairies around
us all the time. I don’t want to accidentally shoot one, or miss one, for
that matter.”
Juliet hoped her brother was being funny.
“You wouldn’t shoot a fairy,” said Juliet, slipping the glasses onto
her face.
Immediately, something appeared in her vision as though it had
popped out of a toaster. The something was certainly not human. It
hung suspended from a harness and was aiming a bulbously barreled
weapon at her head. Whatever it was wore a bodysuit that seemed to
be made of a viscous tarlike substance, which clung to its wobbling
torso and coated every hair of its shaggy beard.
“Shoot the fairy!” she yelped, shocked. “Shoot it!”

- The Atlantis Complex, Chapter 6