SWANS Wire Band for Glasses A-64 M Size Wire Sports Band Glasses Sunglasses DropSlip Prevention 140mm-180mm

Color: BK Black Country of Manufacture: Made in China There are 3 sizes to match the size of glasses and sunglasses. It's easy to put on, and you can adjust it to your desired length while wearing it. Prevents glasses and sunglasses from slipping off even during intense exercise.