Sensory Star Chew Necklace Autism ADHD Kids Adults BPA Free Silicone Toy SafeCan help prevent habits like chewing pens, biting nails, or fidgetingmaking them suitable for individuals of all ages. The necklace design ensures easy wear and quick access, while also serving as a safety feature with a breakaway clasp that detaches if caught on something. In accordance with choking hazard guidelines, these toys are not recommended for children ages 0 3.