A mask-type sleep aid that fixes the mouth and supports comfortable sleep. [Prevents Snoring & Improves Mouth Breathing] Most people who snore sleep with their mouths open. The triangular fixing design of the anti-snoring belt fixes the lower jaw, closes the mouth, and naturally guides you to breathe through your nose. Breathing through your nose allows you to sleep soundly, improving your sleep. [Adjustable] This jaw support is an anti-snoring device that can be adjusted in size at two points with Velcro, fitting different head sizes. It is a unisex supporter with excellent elasticity. - Color: Black - How to use: A mask type to fix the mouth Thank you for viewing. 21-36 19990