Silicone Imported Full Silicone Cord - eyeglasses string strap wont stomp on the back of your head if it is not fixed. The sunglass holder strap fits soft and tight to the back of your head when it is not fixed. Due to the new silicone formula, the eyeglass holder strap wont pull your hair Minimalistic Design - almost invisible sunglass strap has small tips on it, which are to be attached to glasses temples. You can use this eyeglass strap for the temples to 0.47 in width and will wood temples to 0.39 in width. Also, the package of silicone glasses strap includes extra rubber caps to ensure more durable fixation Unique Length Adjuster - The full length of the adjustable eyeglass strap for men and women is 14. Due to a reliable length adjuster with extra ribs, you can easily adjust the length glasses holder strap. The eyeglass string strap is so comfortable that you can forget you have it on Doubled Sliders No Tail Design - due to doubled sliders on the eyeglass lanyard for men and women it wont touch your neck and wont disturb you or irritate your skin 200% Durability - our elastic and soft eyeglass retainer for men are more durable than a regular silicone as it is made of 2 strongly fixed parts that wont fall apart. The eyeglass strap for women is convenient to wear and is a perfect fit for daily usage