Respironics Chin Strap
The Respironics Style Premium Chinstrap may be an option for people whose mouths drop open during sleep and want to use a nasal mask or nasal pillows. A stability strap is included with the chinstrap to add stability and to the chinstrap. Both the chinstrap and the stability strap can be adjusted for comfort.
Center the chin cup of the strap and fasten with the Velcro at the top of the head.
One side of the chinstrap has a vertical slot or split. Attach the stability strap to that side and position it around the back of the head and use the Velcro to attach it the other side.