Wrapables Designer Inspired Double Layer Bubble Necklace, Red Available in colors teal, yellow, coral, purple, red, black or cream. Dimensions: 20.5"L with 3.75"L extension. Size: (small bead) 0.5"D, (medium bead) 0.75"D, (large bead) 1"D. Material: Resin, Alloy.