Naqazia 5 feet 1x jumping mat 1x protection net SOLID STEEL CONSTRUCTION: Fully galvanized steel frame for better resistance to rust and corrosion 6 arc tubes and 3x U foot tubes with 6 balanced contact points for better stability and safety (all trampoline sports products are vigorously tested for safety and durability). For better bounce: The wear-resistant and anti-UV jumping mat (made of PP) withstands high pressure; 36 galvanized springs for good elasticity.