Frequently Asked Questions (FAQs) FAQs for Product: OptiLife Direct Nasal Mask 1. Does this mask support the chin and stop the mouth from opening while you are asleep. Thanks David? (Posted: 14th July, 2008) Question & Answers for Product: OptiLife Direct Nasal Mask Q. Does this mask support the chin and stop the mouth from opening while you are asleep. Thanks David? (Posted: 14th July, 2008) A. No, the bottom strap helps keep the mask aligned. It is not designed to keep your mouth closed. Back to Top Submit A New Question Can't Find The Answer You're Looking For? Submit Your Question Below: Related Product:  OptiLife Direct Nasal Mask Your Question:  (Please enter One Question Only! You can ask as many questions as you like, but do not combine them into one post!) Your Reply Email Address:  Security Step:  Enter the text to the Left in the space below: [ CLOSE WINDOW ]