irønskinn materials have been tested both in the field and the laboratory and proven to be highly resistant to penetration and cutting from great whites and bull sharks in testing. However, Sharks are wild animals and vary in size and aggression of attack. Irønskinn is not designed or intended for deliberate shark interaction. It is designed to provide robust protection in the event of an unwarranted shark attack. If you see a shark, you are advised to leave the water. User assumes all risk from water activities.