Tiwal has been tested and proven in the harshest conditions and passed all its tests with ease. The hull is strengthened in several places with special UV-treated materials. For example, a very thick material used for white-water rafting boats is used under the hull and anti-chafing bands protect the sides. If a puncture does occur, the hull consists of two airtight compartments, inflated separately. In the event of an incident, it can easily be repaired by an approved specialist, anywhere in the world.