 And it was born out of the idea of patient's interest to have a toothbrush that lasted a very long time. So imagine getting ready to brush your teeth at night, right before bedtime, and then seeing the frayed bristles and realizing how damaged and bacteria filled your toothbrushes. And now you get annoyed at having to go to the store to buy something when the store is probably closed anyways last minute. So you just say, ah, I'll get it tomorrow, you know.