Our 15 foot diameter trampoline and enclosure set provides a safe and fun bouncing experience. Quality design and construction now features our new, patented entrance and patent-pending safety enclosure design. All Airzone trampolines and enclosures are independent laboratory tested to meet the most recent ASTM safety protocols. Frame constructed of rugged galvanized steel to resist corrosion. The 6 W-shaped legs provide 12 points of contact with the ground and spring rail for maximum stability with T-joint construction. Patent-pending safety enclosure ties securely to the perimeter of the jump mat, keeping the jumper safely away from the edge of the mat. Easy enclosure access with our patented zippered archway. 6 strong enclosure support poles with foam protection padding. 72 galvanized steel springs for superior bounce