22 Inch Premium Glow Necklaces have an 8 hour glow duration and are a part of our premium line that has a larger volume of luminescent mixture resulting in a brighter and longer lasting glow effect! Premium Glow Necklaces are huge sellers for fund-raising at school dances, concerts, theme parks, fairs and special events - especially fireworks celebrations! Connect the glow in the dark necklaces together and wrap them around your arms, waist or hips. Glowing necklaces are perfect for any party or concert, and just the thing to add zip to any Halloween costume. Glow necklaces can be used as decorative strands of glowing rope to enhance any glow party or lighted event!