Bottom Chin Support Measurements: 3" inches WideVery soft and Comfortable The Most Comfortable snore belt you will ever wear Strap is 3" wide X 4 1/4" long for extra strength holding power to stay together through out night Strap is 29" inches long and can be stretched to fit 30" in circumference Adjustable strap wraps around in effort to keep the mouth closed and reduce snoringMade with comfortable ear holes to help sleepers rest better and easyMay also help prevent dry mouth and sore dry throatWorks to increase REM sleepPrevents ~ Snoring, Sleep Apnea, Bruxism, TMJ Pain One size fits most---easy to wear Approx 24" to 30"Unique design:It provides you with a comfortable, effective and the easiest way to stop snoring or treat positional sleep apnea It helps you and your partner to have a better sleep every night and wake up feeling refreshed instead of fatigued Package includes: 1 x Stop Snoring Belt Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store