Materials vary by style: pendant-style necklaces use metal or metal alloy for the pendant, while glow-stick–style necklaces are made from LDPE (low-density polyethylene).
Glow-stick necklaces advertise up to about 5 hours of glow. Pendant-style or fluorescent pieces are described as losing visible glow after roughly 30 minutes in continuous darkness and must be re-exposed to light (sunlight, UV, or phone/electric light) to restore their fluorescence.
A lobster-claw clasp is listed as the closure type for the pendant-style necklace.
They’re described as party favors that light up celebrations and help create memorable photos at events.
Care instructions are generally not provided. One listing notes the fluorescence fades after about 30 minutes in darkness and will be restored after exposure to phone light or sunlight.
