Material: Made of flexible silicone material, no allergies, durable and comfortable to use
Size: Each strap size is approx. 11.7 * 6.6 * 2.2cm, fits most size eyeglass and sunglass, but not suitable for the too wide and too thin or metal glasses frame
Comfortable: Light elastic fabrics with fine stretch can fit your glasses well, different sizes of heads can be wear
Easy to Use: You can insert both end of strap into your glasses frame, appropriately move eyewear strap to find the right wearing position
Application: Perfect for sports, running, hiking, jogging, swimming, beach and more, strap can keeps you from losing the glasses in a sudden burst of surf at the beach