Our HyperJump 2 comes with a brand new patented design to provide maximum stability for your trampoline on even and uneven terrain. We've put in a lot of thought into our HyperJump 2 models, refined over years of customer feedback, so we know exactly what you want. Our HyperJump 2 model has been specifically designed and fully patented. Visit our website: http://www.lifespankids.com.au/ Facebook: https://www.facebook.com/LifespanKids/