Firefly Glass - dreamy, playful and functional. Seductive and enticing, these glow in the dark little wonders are your ticket for endless fun when the sun goes down. Made of superior quality borosilicate glass with proven shapes designed to perform. For instant heat or a cool chilliness, this dildo can be soaked in warm or cool water beforehand for a hit of warmth or tingly coolness. Suitable for all lubricants. Turn off the lights and turn on the fun!