Wisdom Step by Step products help establish good brushing habits. Step by Step 6+ years is specially designed to clean the mix of milk and permanent teeth. Soft, interdental filaments to help clean all of the surface of the teeth and gums. Gum bumpers to help protect delicate gym tissue whilst brushing. Ergonomic handle design provides a good grip for maximum control. Gentle tongue cleaner to effectively remove bacteria and help keep breath fresh.