Cobra guy wire free 3-in-1 game volleyball, beach tennis & badminton net system. LIFETIME WARRANTY SINCE 1993 Patented Guy Wire Free Design is completely self-supporting Patented design does not require heavy steel ground brackets & spikes inside the playing zone, which can cause injuries Easy 5 minute set up and take down - no heavy steel ground fixtures to remove 3 in 1 game system - volleyball, beach/grass tennis & badminton