This value pack by 4k Logistics is scientifically designed by Reach with a signature angled neck and tapered head to clean hard to reach places. These toothbrushes feature bi-level bristles to help clean and remove plaque between teeth and along the gum line. The signature angled neck extends behind back teeth 60% further than other leading brushes. These advanced design toothbrushes also feature an ergonomic rubber grip for better comfort and control with brushing.