Patent pending safety enclosure ties securely to the perimeter of the jump mat, keeping the jumper safely away from the edge of the mat * The 6 W-shaped legs provide 12 points of contact with the ground and spring rail for maximum stability with no-weld T-Joint construction * Easy to assemble with no extra tools or drilling required * AirZone trampolines come standard with a limited one year manufacturer"s warranty * All AirZone trampolines and enclosures are independent laboratory tested to meet the most recent ASTM safety protocols