The universal Black Adjustable Chin Strap by AG Industries is designed to help prevent leaks that may cause nasal and oral drying. It is adapted for use with any headgear.
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This chin strap is a great fit and works well to keep my mouth closed at night.
Loved this chinstrap.
Could not make it work
Discounts are not valid on the Night Owl Home Sleep Test, and Oxygen Concentrators.