The Berg Champion 380cm has an Airflow trampoline mat that allows 50% more air to pass through than normal trampoline mats. This means that there's less resistance during jumping, enabling your child to jump higher. In other words, more jumping fun. Thanks to the extra-wide and thick trampoline safety pad (38cmx30mm), you can be assured of good protection for the springs. The TwinSpring Gold springs are sturdy, and have a substantial zinc layer. They're placed diagonally, which means this Berg trampoline contains 30% more springs than the Berg Favorit trampolines. This significantly increases the bounce and durability. The frame is galvanized and powder-coated, making it less susceptible to rust than frames not treated with these techniques.