Your family will love the Skywalker Trampolines 15' Rectangle Trampoline with Enclosure! Rectangle trampolines differ from other shapes because of the even bounce it provides. The springs work independently, which allow for a controlled takeoff and landing from any point on the jumping mat. This makes the rectangle trampoline a perfect option for aspiring gymnasts or athletes! A patented no-gap enclosure system interlocks the jump mat and enclosure net at each spring, eliminating dangerous gaps and giving parents peace of mind (Patent #RE45, 182). The framework is made of weather and rust-resistant galvanized steel, providing extra protection for years to come.