Widely Used: suitable for most daily glasses, sunglasses, reading glasses. Suitable for daily use or outdoor sports such as fitness, cycling, fishing, hiking, skiing, rock climbing, etc. Adjustable Size: You can pull the adjusting buckle to adjust the length (expansion range: about 8.5-13.5 inch) of the glasses holder rope ensure a snug fit around the head so that glasses do not fall off or slide down your nose (Suitable for all people). Materials: The glasses straps are made of polyester high-elastic fabric, soft, comfortable, breathable and not tight. They fit perfectly on the head without any discomfort and won't get stuck in the hair. Unique Design: Glasses strap upgraded anti-fall design, the two ends of the frame strap high elastic silicone firmly wrapped around the temples, so that you can easily perform any operation. When you need a break, you can hang the glasses strap on the back of your head around your neck without worrying about it falling off. And after wearing will not leave a tail, do not have to worry about being hooked. Reusable: After wearing the glasses, insert one temple leg into the silicone sleeve and complete the other side. Can be washed by hand and used daily with glasses.