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.
Sports Sunglasses Glasses Neck Glasses Cord Lanyard Straps Neck Spectacle & Sun
Sports Sunglasses Glasses Neck Cord Strap Retainer String Lanyard Gorilla grip.
Sports Sunglasses Glasses Neck Cord Strap Retainer String Lanyard Gorilla grip
