Baltic Amber Teething Necklaces are an excellent natural teething solution and can be worn for years after teething is over. All of their products are 100% natural baltic amber, therefore:sizes, colours and shapes mayvary slightly. Baltic Amber is a fossilized tree resin and comes in a variety of shapes and colours. Baltic Amber is made for wearing (not chewing or ingestion). Amber contains succinic acid, a natural analgesic and healing agent. Amber will warm against your body and the succinic acid will be absorbed through your skin helping with pain relief. 11 inch necklace. Safety Disclaimer: please don't leave children unattended with their necklace or bracelet, it may present a chocking hazard.