Evolution t-shirts are not adult-only products, even babies can own an evolution t-shirt.
This is a “evolution of authority” t-shirt. From the footprints we know that authority changes with time. The first one was some huge creatures, then bare foot men, then men, and lastly women. There are different t-shirt colours for you to choose, which are white, pink, baby blue and daffodil yellow. Each piece of infant t-shirt is $13.99, and you can buy it from cafepress.