PU Leather and Silk Imported Reinforced Anti-Slip Clip Loop - Unlike other eye glasses lanyard for men and women, our eye glasses string holder comes with an advanced anti-slip ring and an elongated spring to prevent your glasses from falling off your neck even when tilted Extended Length 28" - These glasses strap & eyeglass holder strap come with a universal size & can be styled in various ways. They will easily fit a small and large head & neck snugly Premium Soft Eco Leather - Unlike other brands, our reading glasses chains cords for women and men is made with a soft PU leather that will not irritate your neck even if you wear your glasses all day Very Strong Cords - You no longer have to worry about scratching up your lenses when you bend to tie your boots; our eyeglass holders around neck & eyeglass holder strap features a sturdy rope to keep your sunglasses in place Bonuses - Our eyeglasses leash & eyeglass holder strap comes with functional accessories to keep your glass and strings save for years