The Eyeglass Straps is made of silicone, which provides a comfortable fit, doesn't soak up sweat, or fray. It is soft, durable, and washable. And it is anti-slip, being made to keep a tight grip on your glasses can have more active moments in life. Fits most kids and adult size glasses or sunglasses. Feature - ColorAssorted Color - Material: Silicone. - Size: 21.5x1x0.2cm. - silicone anti-slip holder for the eyeglasses, ear hook. - Super and light, comfortable and . - Secure your glasses and sunglasses during use . - Easy to use. Suitable for sports and activities. - Made of , comfortable and to wear, not easy to break, can last a long using life. - These cords would help to unwanted fall of your glasses thus to protect them from getting or accidental loss. - These eyeglass chain fit for eye glasses, sunglasses and so on. - Also suitable for traveling, outdoor and indoor activities and so on. - Warm Tip: Dear buyer, Due to lighting effect,monitor's brightness,manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. sincerely hope that you can understand! Thank you! Package list: 3 x Eyeglass Straps