The BERG InGround Champion 14ft Trampoline + Safety Net are made to be sunk into the ground and comes with specially designed caps to keep the safety net firmly in place. The extra wide and thick protective edge completely covers the springs and round frame. For extra protection the framework has been double coated.This trampoline has TwinSpring Gold Springs, allowing you to jump high and in comfort, these are made from galvanised steel and has a perfect balance between strength and flexibility. Quick and easy to assembled.The BERG Champion trampoline has been designed for comfort, durability and safety.13 Years Warranty on FrameSuitable for children aged 6+ yearsWe advise that no more than one person at any one time uses the trampoline. We also urge that an adult is present at all times to ensure maximum safety.