- The K1 Broad focuses on establishing nasal breathing and myofunctional habit correction for patients with a genetically broad arch form. - It is soft and flexible, giving the best compliance, while being adaptive to any arch form and malocclusion. - It has small breathing holes to establish continuous nasal breathing and myofunctional features to promote correct habits. - Move to the K2 Broad only when the K1 Broad is staying in overnight and nasal breathing has been established. **For further product information, please contact Chat Support**