For those concerned about mouth opening during sleep. Comfortable OLG Sleep Band [Product Description] Do you worry about your mouth opening during sleep? OLG Sleep Band addresses this concern. It gently holds the mouth area during sleep, supporting a structure that helps to prevent "mouth opening." It leads to a more comfortable sleep time, making you less concerned about dryness around the mouth during sleep. *Please refer to the Makuake page for other detailed explanations. [Product Condition] I purchased this myself on Makuake and it arrived around January 2026. I am selling it because I bought it for my parents, but they don't seem to be using it. The crowdfunding on Makuake has ended, so how about it for those who have recently learned about it? Thank you.