Functions and Materials: This product has two functions. They can be used as Face Mask strap Bandanas; also they are eyeglass strap retainer. You can hang your face mask around your neck when not in use by using this Face Mask Holder Chain. Keep your face mask secure and clean. And by putting the little loops on, it became eyeglasses retainer, you can secure or hang your eyeglasses. Materials: This Face Mask strap bandanas or eyeglasses holder retainer is made by find polyester. And the Adjusting buckle is plastic. The clasps are made by find stainless steel. They are Durable and Applicable. Size: The diameter of this Fashion Eye-wear Retainer is about 0.2 inch (5 mm) and the length is about 28.3 inch (72 cm). Good length for you to hanging your face mask or glasses on the neck. Also it has an Adjusting buckle; you can find your perfect length. Easy to Install and Remove: This glasses strap is Easy to install. Soft material silicone loops, it will not scratch you glasses. And you can remove the loops and connect your face mask by clasps. Like a Necklace:Clip the small clasps to the elastic bands of your mask. Like a glasses retainser, just slip it over your head and wear like a necklace. These mask chain can be used with most holders that have two holes on top and any type of mask or bandanas. Keep Your Face Masks Clean: Face masks work better if you don't constantly touch them and set them on dirty surfaces. Make a paracord mask hanger to achieve it. This easy rope uses zero knots. Also way for zero-waste since mask holders are cycled or reused. NO MORE DIRTY SHOVED INTO YOUR PURSE, POCKET OR GLOVE COMPARTMENT - Also Prevents Dropping and Misplacing of cover - Works the Same Way as a Glasses Tether Necklace / Retainer