The Oakley sunglasses leash accessories kit is a universal leash that snaps on to the end of your sunglasses to help keep them securely in place. Made of TPE rubber, the leash caps will stick to the team without disrupting form or fit and will expand or contracted based on the stem size. Available in small or large cap sizes, the large leash has an 18" cord with cap dimensions of 17.1mm high and 23.7mm wide which fits eyewear with larger stems. The small leash also has an 18" cord with cap dimensions of 11.4mm high and 16.8mm wide which fits eyewear with smaller stems.