Feature: Promotes a Better Night Sleep-Suitable both for man and woman. The Anti-Snore Ring works by physical process -, Using the principle of acupressure the wearing of the ring promotes the dilation of the breathing areas thereby removing the primary cause of snoring Acupressure on little finger .It's a natural, no side effect and hassle free way of getting a great night's sleep. Material:Zinc Alloy, Size : The inner diameter of ring, S(1.5-1.7mm) M(1.7-1.9 mm) L(1.9-2.2 mm) Color:Silver Quantity: 1 pc Note: Transition: 1cm=10mm=0.39inch No retail package. Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 xAnti Snore Ring (other accessories demo in the picture is not included.)