100% Spandex Imported Unique Non-Slip Clip Loop - Unlike others that dont stop slipping glasses, our eye glasses string holder & glasses strap comes with an advanced loop protection mechanism to totally prevent your eyeglasses from falling. For Wide and Narrow Temples - Our eyeglass lanyards for men are made to cling tightly to all types of glasses temples. This eye glasses chain for women is ideal for small and wide arms. Adjust the Length - Thanks to their adjustable design and 27" length, our eyeglass straps for men & eyeglass chains for women are comfortable and versatile enough to wear for all head shapes and neck sizes. 4 Black Pack + Bonuses - Our eyeglass holders around neck come in bold black colors that can go with every eyewear. This eyeglass strap for women also comes with a surprise gift. Lifetime Warranty - You can buy our glasses lanyard with confidence. Contact us for help if you have any issues with your eyeglasses string holder.