Unwind and relax with the new Flat Square Hair Clip! Designed with our same innovative material that is nearly unbreakable, this clip is perfect for lying down, doing yoga or simply laying back without discomfort. The small size is suitable for thin to medium hair types, whether worn up or half-down. The small size is 3. 25 inches long. Medium clips are great for thick to medium thickness of hair. The medium size is 3. 75 inches long. The large size is great for thick hair. The large size is 4. 25 inches long. Sold as an individual unit.