Ack! Shark attack! Deal with it wearing the organic cotton Boys' Patagonia Shark Logo T-Shirt. Speed, agility and keen senses are all characteristics worth emulating. The Shark Logo T-Shirt brings them to the forefront on an organic cotton T-shirt that's ringspun for softness and durability. Artwork by Justin Atallian uses colorful screen-print inks that are PVC- and phthalate-free.