Abstract: A plug device for coupling a frame of a pair of glasses to one of a temple or a head strap buckle includes a socket member having a receptacle. The receptacle includes an outer lateral wall having an opening in communication with the receptacle. A button is moveably received in the opening. A resilient member is received in the receptacle and biases the button into the opening. A plug member includes a resilient hook releasably engaged in the receptacle. A distal end of the resilient hook is releasably received in the opening and abuts a peripheral wall of the opening. An outer end of the resilient hook abuts the inner end of the button. The button is pressable in the direction to disengage the distal end of the resilient hook from the opening, allowing the resilient hook to be removed from the receptacle of the socket member.