Review on 🕶️ Elevate Your Style with the Elegant Eyeglass Sunglass Strap Chain Retainer Leather - Men's Fashion Accessory by Swami Alcaraz

They don't stretch very much, are quite stiff and often touch your cheek which is distracting. These are small rolls of some plastic material with nothing inside. The first one I used came loose at the seam. They all showed "memory" due to the fact that they were tightly bound when I received them. I had to hang them up with a small weight on one end and let them line up. This is my first purchase of such a product and there should definitely be better ones on the market.