Yellow Lightstick Necklaces (12 count) are made of plastic and measure approximately 4" high. Package contains 12 plastic cord lanyards so you can wear lightsticks around your neck. Instructions: Bend along the entire length of product and shake. Full glow can take a few minutes. Thread lanyard through hole in lightstick to make necklace. CAUTION: Do not puncture or cut product. Ingredients are non-toxic and non-flammable but may permanently stain fabrics or furniture. Contact with skin or eyes may cause temporary discomfort. Do not leave product in direct sunlight or expose to high temperatures. For ages 6+. (c)Amscan is a registered trademark, and Super Glow is a trademark, of Amscan, Inc.