Sunglass Holder: The 3mm diameter Spec ends of glasses holder prevent slipping and sliding of a wide variety of glasses Comfortable glasses frame: Stretchable glasses strap is made of high-quality braided nylon climbing rope with adjustable black sliding beads to fit the head tightly Durable glasses frame strap: Washable sunglass strap is 14.2 inches long (each side) and 3mm in diameter Multi-purpose glasses holder: Designed to provide eyewear security during urban exploring, hiking, and on the beach, this eyewear retainer prevents loss and breakage The 3-pack design provides you with more choices and convenience. Whether you are preparing for yourself or sharing with family and friends, it can meet your needs, Manufacturer: The Lord of the Tools