ADJUSTABLE – Fully adjustable to ensure a snug fit around the head so that glasses do not fall off or slide down your nose. Extendable so that your glasses can be carried around your neck as well!  VERSATILE – Perfect for everyday use or for outdoor sports such as fishing, biking, skiing, hiking, rock climbing, etc. Fits most sunglasses, daily glasses and reading glasses. One size fits all, making this glasses accessory perfect for both men and women.  FASHIONABLE – Competitor straps have a single adjuster, creating an ugly and intrusive tail. These cables feature dual sliders that eliminate the tail and allow for a sleek and refined look. Buy ours and live a tail-free life!  PRACTICAL – Whether you get annoyed constantly pushing your sliding glasses back up your nose or want to ensure your valuable glasses don’t fall and get damaged during your next adventure, these eyewear retainers are your answer. They are made of tough, wear resistant silicone that is built to last.