Wired Imported The Unique Patented Tips for Any Glasses Types - due to the unique technology of our sunglass strap for man, our eye glass string strap tips can be used with both wide and narrow temples Stronger Fixation of Your Glasses - the glass strap has through openings which makes a strong fixation of the eyeglass holder strap and is 2 times stronger Unique 2 Steps Length Adjuster - The full length of the adjustable eyeglass strap is 18. You can adjust the length of the glasses holder strap not only with our regular adjusters but also due to through holes - you can switch the position of the tips on the temples, which helps the eyeglass lanyard to be strongly fixed on the back of your head and keep your glasses secured No Tail Design - Our sunglass holder straps are equipped with doubled sliders to make a no-tail design and stylish look. The sunglass strap retainer stays invisible on your head High-Quality Materials - Soft premium-class silicone and steel wire with a protective layer made this glasses string cord not only durable but also comfortable to your skin and touch