The BERG Champion 11ft Trampoline + Safety Net comes with an extra wide & thick protective edge, which completely covers the springs & round frame. For extra protection the framework has been double coated. This trampoline has Twin Spring Gold Springs, allowing you to jump high & in comfort, these are made from galvanised steel & has a perfect balance between strength & flexibility. Quick & easy to assembled. The BERG Champion trampoline has been designed for comfort, durability & safety. Suitable for children aged 6+ years The trampoline should be placed on a flat, soft surface. We 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.NB: Ladder not included