Made from recycled-nylon cord, this reflective strap attaches to your sunglasses so you can wear them around your neck on long days in the sun. The looped silicone ends securely grip your frames, while the leather keeper can be used to adjust the length. Recycled polyamide is polyamide made from textile waste in production Shell: 65% recycled polyamide (recycled nylon), 25% post-consumer recycled brass, 5% leather, 5% silicone. Excluding trims