It stops snoring by keeping the chin forward and opening the airway. The position of the chin can be adjusted according to the intensity of the snoring. Custom molded dental impressions provide a comfortable and secure fit.Address the causes of snoring, improve breathing, and get restful sleep. Open the airway to improve breathing and quiet snoring. The patented adjustable design gently moves the jaw and tongue forward. A simple fitting process adapts your teeth to your personal shape. For the cause of snoring, start relaxing and get a good night's sleep the first night you use it. Helps your bed partner fall asleep while giving you a good night's sleep. Safe and Effective FDA Trusted to Reduce Snoring, Breathe Better and Sleep Better. It is hypoallergenic, BPA and latex free. Adjustable and comfortable front opening allows users to fully ventilate while sleeping, with an adjustable range of up to 8mm. Use the included tool to make initial adjustments to the fine-tuning chin, which makes it an effective personal snoring solution. Product size: 6 *1*2.5cm Package size: 17*23.5cm Weight: 52g Package includes: 1* Anti-Snoring Device