Our eyewear retention system is designed to keep a tight grip on your glasses or sunglasses when they fall by keeping them secure around your neck, allowing sunglasses to be comfortably hung on your chest, or rest on top of your head when not in use. Breathable padded lightweight material offers comfort and simplicity,cool styles for enjoying the great outdoors. Fast and quick drying material so feel free to live in the moment and get your straps get sweaty, dirty or wet. Can enjoy more freedom for indoor or outdoor activities in style such as running, fishing, cycling, or playing tennis. This strap will fit many styles of eyewear.