This is a Dr. Archie McPhee's Miracle Steampunk Sleep Mask.
"Finest Quality Luminescence Dampening Apparatus! An Amazing Innovation for Magnificent Slumber!"
It has a polyester face, elastic strap, and soft cotton backing. The face looks like steampunk goggles.
It measures 7.5" by 3.75" and was made in China.
It comes new in the original packaging.