[Unique Bristle Technology] The product features a unique bristle design, combining different bristle types in one toothbrush. It has 0.15mm firm bristles in the center and 0.07mm nano-soft bristles on the sides [Efficient Brushing] The firm bristles in the center effectively remove plaque from the surface of the teeth, while the nano-soft bristles on the sides ensure gentle brushing, protecting your dog's sensitive gums [Ergonomic Handle] The handle is ergonomically designed for a stable grip. Its length and thickness are tailored to suit the needs of pet toothbrushes [Designed Bristle Angle] The 3-sided bristles are designed at a scientific angle to efficiently wrap around your dogs conical-shaped teeth [Pet Care Focused] We are dedicated to designing pet products and sharing valuable pet care tips with you