The grippers for the arms of the glasses are a rubber moulding with a slot. These eyewear holders are substantially more durable than those using a rubber ring and have remained tight.
Gorilla Grip Secure Spectacle/Glasses Cord Holder / Lanyard Tintin Panda Grip
Gorilla Grip Secure Spectacle Glasses Cord Holder Spec - SUPERIOR Grip TECH
Gorilla Grip Secure Spectacle/Glasses Cord Holder / Spec.Lanyard - Maroon
Gorilla Grip Secure Spectacle/Glasses Cord Lanyard - BROWN + GREEN/RED FLECKS
