rectangular or square shape glossy or matte finish typically white, but can be other colors text or images on the front a space for a message and address on the back a stamp in the corner of the back
postcard which has rectangular or square shape postcard which has glossy or matte finish postcard which typically white, but can be other colors postcard which has text or images on the front postcard which is a space for a message and address on the back postcard which is a stamp in the corner of the back