*Incluye: 4 PiezasAdjustable: Our Glasses Strap buckle slides along the strap to adjust the length, It brings the Eyewear Retainer no more worrying about your glasses slipping off your nose when you sweat or look down with your glasses on. It is suitable for people who wear glasses while running or for children who play sports with glasses. When not in use, you can hang it around your neck, or put it on top of your head.Tailless design: the eyeglasses string strap can be used alone or combined with ear hooks. Eyeglass straps have a tail-less design, no hanging ponytail, with a portable pocket plastic case for easy storage, and achieve a stylish and sophisticated look.Multifunctional:chums glasses strap, eyeglasses strap that can fit all people. Suit for nearsighted glasses, sunglasses, daily glasses, and presbyopic. Good ideal for any water activities or outdoor sports such as fishing, biking, skiing, hiking, rock climbing, etc.Soft and comfortable:Our eyeglass straps for men and women are made of highly elastic silicone + steel cord material, waterproof, fast-drying, lightweight, very soft on the ears, and can be worn well during sports or naughty boy playing.100% Satisfaction Guarantee: team are strives to provide 100% customer satisfaction and offers a lifetime guarantee. If there are any problems with our products, please contact us, and we are happy to solve your problem.