Color: Black Set of 2 These are eyeglass straps with length adjustment. You can adjust the length when doing sports or light exercise, so you can enjoy your activities without dropping your glasses. Please use them when playing sports, jogging, etc. They are also very convenient as you can hang them around your neck or suspend them. Length: Approximately 60cm * Shipping will be on weekdays, Mondays, Wednesdays, and Fridays (subject to change). * We apologize, but we do not ship on holidays. If your order is completed by 9:00 AM on the day of shipment, it will be shipped that day.