25 m. Helps you start flossing right. Pre-measured strands. Fluffy texture. Oral-B has designed UltraFloss to help make flossing simple and comfortable, from the very first time. UltraFloss comes pre-measured, so you always get just the right length. It is made of unique fluffy material designed to avoid irritation, which stretches thin to glide between the teeth, then springs back to clean away plaque. Used daily, UltraFloss helps your teeth and gums stay healthy. Made in Ireland.