Geologists tend to be a bit more extroverted than the engineers they may work with, but still is there any arguing that rocks are better than people? Rocks are really gneiss, they have nice cleavage, and always take the fault. See what I did there? This is 3.7" x 1" and made of a high quality, durable vinyl. It is perfect for water bottles, hard hats, cars, notebooks, clip boards, lunch boxes, and more!