Bow Glowbys fiber optic hair extensions! This Glowbys version has an attractive bow-shaped barrette with the plastic barrette color matching the light color. They also switch on/off by closing/opening the hair clip of the barrette. Bow Glowbys hair lights are illuminated thin fiber optic strands attached to the hair to create many brilliant stars of light. A small bow-shaped barrette (1.5" x 0.75") is the light source which lights up the fibers.