【Upgrade Design】 Equipped with slim velcro tabs and triangle design, solid and fixed, does not fall out when sleeping. The stereoscopic clipping perfectly fit to you face, designed for whole night comfort. 【Improve Sleep Quality】 Chin strap for sleeping is designed to dramatically improve sleep quality and reduce snoring. By gently and effectively holding the jaw in place, the device keeps the airway open and prevents obstruction of the airway caused by a falling tongue and slack jaw. Meanwhile the partner can enjoy a quiet night. 【Comfortable and Adjustable】 This airflow jaw strap, able to adjust the tightness according to the needs of different users, soft material, suitable for all kinds of face shapes. Both men and women can adjust the length of the band according to their needs to ensure that the straps are not too tight or loose.