Simple application to establish nasal breathing habits: Supports the natural closing of the mouth while sleeping, improving unconscious mouth breathing. Aims to improve sleep quality by maintaining nasal breathing until morning. Gentle design to reduce skin stress: Non-touch specification that does not use adhesive on the part that touches the lips. Designed with sensitive skin in mind, it has a structure that makes it easy to use every night without feeling burdened. Comfortable fit that adheres firmly until morning: Uses non-woven fabric with high breathability and moderate elasticity. It is difficult to peel off even when tossing and turning, yet it achieves a comfortable fit with less burden on the skin. Comprehensive care for problems caused by mouth breathing: Suppresses dry throat, bad breath upon waking, and increased risk of cavities, which are likely to occur due to mouth breathing. Switching to nasal breathing also contributes to maintaining the health of the mouth area. Satisfactory quality recommended by sleep professionals: Developed under the supervision of a sleep consultant. A reliable item that thoroughly pursues materials and ease of use, it firmly supports restful sleep for those who suffer from snoring and sleep apnea.