High-end skin-friendly composite material: no irritating smell, comfortable not itching. Breathable design: no sweat damage. Smooth adjustable double Velcro: no scratching, suitable for different head size to wear. Triangle design - solid fixed does not fall off The main pair of double - pull band: strong and comfortable to pull up the jaw. Applicable to people snoring due to mouth breathing during sleep. Stop snoring chin straps does not work for all types of snoring. If you do not open your mouth during snoring, it will not work on you. Please select to purchase it based on your situation. This product cannot replace a surgery or specialized treatment. For elder people who suffer from snoring or those who have very serious snoring issues, please seek treatment from a professional hospital. There might be a little bit of odor for the new product, but the smell will disappear after using it for a couple of times. During the process of wearing this product, when combined with sleeping on the right-hand side, it can be more effective in stopping the problem of snoring. Our product is designed to meet your need and reach satisfaction. If you are not fully satisfied with this device.