The sports model. Headband for spectacles ensuring that they stay on, even when you are doing something that requires a great deal of movement. Adjustable length..

The flexible option. Comfortable spectacle cord with two tubes for attaching to the temples. Can be easily adjusted to either let the glasses hang around the neck, or to help secure them on the head.

The long option. Cord for attaching the spectacles to the body. Prevents the wearer from mislaying the spectacles and then spend a long time searching for them.