The Airzone 14' Spring Trampoline is great way to have fun with your family and friends. The trampoline has a rust resistant steel frame, W shaped legs for added stability, high performance steel springs, a weather resistant mat and frame cover, and thick rail padding over the springs to add extra protection and increase the landing area.Legs diam 38mm tube thick 1.0 mm Enclosure features Sets up easily and provides a safe bouncing environment for the entire family Durable, 360 degree, nonabrasive polyethylene mesh netting is tightly woven so fingers and toes don't get caught Heavy duty 5' padded steel masts provide safety and long lasting use Mast enclosure keeps netting taut and ensures safety Completely zippered arch entrance provides total closure of the mesh while allowing for quick and easy door opening Certified by an independent laboratory to pass all ASTM safety requirements