Slotted sunglasses are all the rage right now, but this particular style is especially appealing to anyone who roams the night. Infused with glow in the dark materials, the plastic frame glows a pale green in darkness and appears a light gray in daytime. Also glows under black light or Ultraviolet light. One size fits most adults and teens. Please note, these glasses have no lenses and do not offer any sun or UV protection.