Don't loose another pair of glasses! Polyester eye glasses cords are perfect for making sure you don't set your glasses down and forget them. When taking off your glasses, they will simply hang from your neck. Plus, the cords are buoyant and will keep your glasses afloat if they come off in the pool. Case includes 24 – 20½" floatable sunglass cords assorted among blue, red, yellow, and black.