They're super easy to use, lets show you how:)
Slide the rubber tube over the arm of your glasses.
Adjust the tjoobie to a comfortable position on the arm of your glasses. They need to be positioned in front of your ears.
Then fasten your Tjoobies tightly to your glasses arm by applying upward pressure to the silicone noodle.
Tjoobies are lengthed to hang at a comfortable length when they are on your face and around your neck.