This sensory jewel helps the child or adolescent to calm down, improve their level of attention and reduce sensory seeking behavior. Features : -Made of food grade silicone, free of BPA, phthalates, cadmium and lead. -Equipped with a resistance cord and a secure clasp that detaches without breaking when too much tension is exerted.   Safety and Maintenance: -Clean in the dishwasher or by hand with soap and water. -Clean before first use. - Check the product frequently to ensure that no part is damaged. Do not use if damaged. -Do not leave baby toy alone with the pendant, it is a jewel and not a toy. -Do not let the child chew the clasp so that it remains functional.