Features: brand new and high quality Usage:The ring uses acupressure, applying pressure on specific points on your little finger. The unique device uses two acupressure points. The proven ancient for theory brings about superior benefits. Use Anywhere:The anti-snoring rings comes with mini size with light weight is convenient to carry, no matter you are on a trip or out for business, carry this anywhere relieving snore and nasal congestion fast to give back you and her a good sleep and smooth breath. Without Side Effects:Acupressure treatment is healthy to use without side effects, which can stimulate acupressure point to reduce or eliminate snoring. Adjustable Opening: Adjustable opening is easy to put on and take off for comfortable and firm fit. Wide Use:The ring not only eliminating snoring but working in harmony with your body's bio rhythms. It's a natural, hassle free way of getting a great night's sleep. Specifications: Material: Alloy Ring Size:S/for M/L SizeS :Diameter:Approx.15mm-17mm/ 0.59-0.67inch SizeM:Diameter:Approx. 17mm-19mm /0.67-0.75inch SizeL :Diameter:Approx.19mm-22mm /0.75-0.87inch Package Includes: 1 Piece Ring note: Please allow 0-1cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.