Light up the night with our 22-inch single-color glow necklaces! They're a perfect accessory for a variety of costumes, and they make fun party favors for both children and adults. Dimensions: approximately 22 inches long. Each necklace glows 1 time, for 6-8 hours, and comes with 1 connector (not pre-attached). To activate the item, snap it and then shake it until it starts to glow. Sold by the box (50 necklaces and 50 connectors per box). The more you buy, the more you save!