Product Features: 1. Extra fine bristles for a thorough clean experience. 2. Super value, only 10 RMB.Product Material: Handle: PP+TPE; Bristles: NylonHow to Use: Place the brush bristles on the gumline, then press and brush gently along the direction of teeth. Brush downward for upper teeth and upward for lower teeth. All aspects of your teeth have to be brushed. The same area needs to be repeatedly brushed.