Fully Adjustable V-elcro: : Two extended V-elcro straps fit a wide range of head sizes, making it a flexible choice for both men and women. Simply wrap the strap around your head and adjust the top and ear straps for a secure, comfortable fit.Multi-functional Chin Strap: : The airflow jaw strap not only effectively reduces nighttime disturbances but also significantly improves dry mouth, providing much-needed relief, this chin strap is designed to encourage proper habits. All in all, it lets you and your partner enjoy a far better quality of rest and wake up ready to embrace a new day with full energy.Effective Solution: : The chin strap supports your jaw and keeps your mouth closed to optimize airflow. It is designed to help both men and women smoothly and effectively reduce nighttime noises for more peaceful rest.Two Sets for Alternating Use: : We include 2 washable and replaceable chin straps, allowing for easy rotation. One can be used while the other is being cleaned, ensuring hygiene and convenience.Upgraded 90 Support Design: : Our device features a reinforced 90 support design, lifting the jaw for better alignment. The durable fabric resists stretching, greatly improving longevity. Whether for personal use or sharing with family, it is an excellent choice.