The chain is made with great rubber loops with a securement on the adjustment ring which prevent it from falling off

making them comfortable to wear

It can cause headaches

and structures in the glasses

allowing the frame to adjust to the head size

silkeborg steel reading glasses video-matched The chain is made withTurn back the clock with Silkeborg, a tribute to John Lennon and his legendary round glasses. Silkeborg offers you an elegant and minimalist look that never goes out of style. With soft nose pads and a slim titanium frame, you don't have to compromise on comfort. Made with lightweight materials Extra strong and sturdy frames High quality modern design Available in +1 to +2. 5 strengths Comfortable fit Durable lenses