Features:- The Zol Eyewear Wire Adjustable Sunglass Strap is lightweight, waterproof and stain resistant accessory that fits most adult eyewear frames. Has a 15'' length and can be adjust to 10"" . The Zol eyewear wire adjustable retainer is a great accessory for: water sports, hunting, shooting, driving, hiking, cycling, running, fishing, boating, and every day use. One year warranty directly with manufacturer.- Adjustable 15""-10"".- Waterproof.- Lightweight.- Fits most adult eyewear frames.