Airberth is made of HDPE, a sturdy material with a 50-year lifespan. The only metal parts of the system are marine-grade stainless steel fasteners, which remain out of the water when the system is raised. Positioning inside the Airberth is facilitated by mooring guides, which place your boat in the correct position without causing any damage. Airberth is a self-centering and self-balancing system that exposes your keel to zero risk.