This is a Bluetooth beanie and it can be used by a 19 year old. This beanie has a special feature like Bluetooth. It can connect to the phone easily. One gets these in many different sizes and many different colors.
One of the perfect gift ideas for 19 year old boy. He can carry this beanie to every place easily as it can be folded and kept in a bag. It will automatically get connected to the last Bluetooth it was connected too.