SECURELY RETAIN - snugly fit. can securely keep your glasses on. never worry about the glasses slide off the nose when sweaty or looking down. Perfect for those who wear glasses while running or doing sports and great for Halloween decorations. SOFT LIGHTWEIGHT - ultra comfortable. very soft on the ears and nicely keep glasses on during sports or rough boy play. It is flexible enough for you to slide glasses off your eyes while reading/doing close up stuff. QUICK DRYING - 100% neoprene. quick drying and keeps you from losing the shades/glasses in a sudden burst of surf at the beach. Perfect for the water/amusement parks. beach or anywhere youre afraid you might lose the glasses. UNIVERSAL FIT - fits most eyewear to prevent from slipping during rough boy play and securely retain on head. neck or even arms. Recommend for anybody who wants to keep glasses right on and stay put safely and gracefully. PERFECT LENGTH - It is precisely cut without any excess strap dangling down your back. short enough to securely wrap around your head and long enough to take glasses off your face and hang them around the neck when not in use.