This Brain Size Matters Weatherproof Vinyl Decal is a great way to show off your intelligence and sense of humor. The decal is made of durable vinyl that is weatherproof and can be applied to any smooth surface. The decal features a black and white design with the words “Brain Size Matters” in bold lettering. The decal is perfect for car windows, laptops, notebooks, and more. Show off your smarts with this fun and stylish decal!