Like the ring at the bottom to show the difference in the two brushes. So far the brushes are holding up, I’m hard on brushes that are soft, these brushes are not soft so believe they’ll be perfect and last a couple of months. Like how the water sprays out in a good stream removing small particles left on my teeth or in my mouth.
I really like the small brush heads as they fit in my mouth easily. They are not too stiff or too soft. They do a good job of cleaning my teeth and massaging my gums.