100% silicone. Ages 3+. No BPA, phthalates, cadmium, lead, or metals. Select Bangles Glow in the Dark after exposure to sunlight or indoor light. Longer exposure to light sources generates a brighter glow in the dark. Easily cleaned with dish soap and water, also dishwasher safe. Pre-pack of 3. Jewelry can be used as a sensory tool. Children with fully developed teeth or excessive biting may be able to tear beads. Jewelry should be inspected before use. If damaged, discard immediately. If using as a sensory tool, please use it under adult supervision.