I have here a 2 piece Baby on Board window set. These bright yellow with black lettering placards are 6 inches by 6 inches. Made of a stiff vinyl type plastic, the rubber suction cups are 1-1/4 inch diameter at the top and bottom of each placard. Lettering is 1 inch high. Cups can be removed if you prefer to tape the sign. Instructions are on the blister card, as you can see in the 2nd pic. These can be used over and over from vehicle to vehicle. Thanks for stopping. Please visit my slow growing store, view items, and, if you like, read about me my policies. David - thediscountretailer