The Months Toothbrush Set serves as a reminder of when it’s time to switch to a fresh brush. Dentists always recommend to replace our toothbrush every three months. But months would pass by as we would use the same toothbrush. We needed a reminder, so Izola decided to put it right on the handle. Izola’s toothbrushes are made from sustainable bamboo and nylon bristles. Months toothbrush set comes in a set of four so that you can conveniently replace your toothbrush once every three months.