Our U-shaped long-head toothbrush is carefully formulated with pp+PET for the handle and PBT for the bristles. Designed specifically to enhance cleaning speed and effectiveness， this super-long brush head enables quick coverage of more areas. The usage method is extremely convenient: 1. Moisten your mouth with clean water. 2. Squeeze toothpaste or other oral products onto the toothbrush and moisten it with water. 3. Aim the toothbrush at your teeth and scrub each tooth in a circular motion for 2 to 3 seconds. 4. Finally， rinse your mouth， rinse your toothbrush and keep it dry. And it adopts a brush tip design that extends deep between the teeth for easy cleaning. The bristles are carefully designed to ensure that every tooth is clean.