Latex Thread Imported Unique Non-Slip Clip Loop - Unlike other eye glasses string holder, our sunglasses strap comes with a unique design loop that prevents your glasses from slipping off ever For Wide and Narrow Temples - Thanks to our unique design of clip loop, this glasses strap is easily compatible with all glasses. You can use this glasses holder strap for small and large temples unlike other eyeglass holders around neck for men Increased Length - For our sport glasses holder retainer, we increased the length by 2 inches so you can comfortably wear it even with a thick neck. With length adjuster, you can use these eyeglass straps lanyards & sunglass straps holders without troubles! 4 Pack + Unique Bonus - Our eyeglass strap & eyeglass chains for men come in black colors to match your glasses. These eyeglass accessories also come with a unique stylish cleaning cloth Lifetime Warranty - for our eyeglass cord set. Contact us for help if you have any issues with your eyeglass straps for men