The first DIY custom molded truly wireless earphones that easily form to the exact shape of your ears in minutes. Simply heat the Decibullz thermo-fit earpieces in water and press them into your ears for a perfect fitting earphone that will never fall out or become uncomfortable. Not only will the Decibullz earphones stay in your ears no matter what, they also feature award-winning sound engineering, Bluetooth 5.0, and long battery life.