The eyeglass chain link is made of flexible material that fits the head perfectly and can be modified to easily secure the eyeglass chain around the head. This silicone ring is an eyeglass chain accessory that attaches the eyeglass chain to your temples.function-Color: Black + White K, White + White K-Material: Silicone.-Size: about 2 x 1 x 0.5 cm.- Made of soft material, it fits the head perfectly and can be modified.- The metal coil can be moved by the user to adjust the adhesion of the glasses.- This rubberring is an eyeglass chain accessory that attaches the eyeglass chain to the eyepiece legs.- The silicone ring will stabilize the chain on the glasses and will affect the anti-skid performance.- You can make glasses yourself with this silicone ring,it's durable, wear-resistant and easy to install.Glasses Chain Silicone Ring Chain Attachment Chain Snow Chain Glasses Rope Glasses Chain Ring Rope