Since I have very sensitive gums, always buy ultra soft brush. This brush is simply a godsend for me. It cleans the teeth and does not injure the gums. Due to the varying length of the bristles are cleaned well and interdental spaces. Due to its configuration, the brush easy to get to hard to reach surfaces. Ergonomic grip, comfortable to hold in hand. I will order more. If my review was interesting for you, please click, "YES" at the bottom.