Rope cord, with tighter braids than you can get in Jamaica. A little fashion statement that holds your glasses.
Nice cords, work great for kayaking. Good connection with thin metal frames, which these cords go best with. Cords are very light, and seem strong. No swivel, so they may twist a bit. I bought a few. for me, they save me losing glasses from a dunk in the drink.
This is a great cord for the light weight glasses that I wear. Definitely recommend them !!