Safety First Unlike most 12ft trampolines that have only three legs, our Jumpzylla trampolines feature four legs for superior stability.  Additionally, we've incorporated curved poles, an innovative design that provides extra protection for your children, reducing the risk of accidents or injuries. Jumpzylla trampolines meet the rigorous ASTM F381-16 safety standards, reflecting our unwavering commitment to your child's safety. Warranty Your new Jumpzylla trampoline includes a FREE 2-Year Warranty! If you live in a natural disaster-prone area, explore additional warranty options available on this page.