Hello Kitty Nerds Love Heart Vinyl Sticker Decal High quality, waterproof die cut vinyl decal rated for 7+ years outdoors. Perfect for car windows, walls, laptops or anywhere smooth. There is no background color it will be whatever you apply it to. They measure 5.5" and the largest point and are proportional. Color will be as shown unless you specify upon checkout with one of the following colors: Black, white, matte black, matte white, red, turquoise, burgundy, light pink, dark pink, purple, orange, yellow, green, blue, mint green, icy mint blue, light gray, dark gray, silver or gold. Need a custom size? Just send us a note, we can do custom sizes and designs!!