Well, hello. Meet the new Earth Tattly by Oliver Jeffers. Spinning off from his #1 New York Times Bestselling picture book Here We Are, Earth floats on any space you can fit a Tattly. Share this pair with your favorite fellow earthling. Size: 2" x 2". Application: Tattly are safe and non-toxic, lasting on average 2-4 days. We suggest placing on oil-free areas where skin does not stretch and keep them clean.