New Multi-Functional Fun Factory: The Spark Trampolines are like nothing you’ve ever seen. With many add-ons available (SOLD SEPARATELY) like a basketball net, monkey bars, net swing and more, it will provide your friends and family endless fun in your own backyard kingdom.Unique Cross Joint Safety Poles: Spark Trampolines offers “V” shaped support legs, high strength galvanized steel tubes make the Spark system a stronger and more reliable trampoline.Double Spring System: The innovative Spark trampolines comprises a two-spring system. The main spring system attaches the jump mat to the frame. The secondary system links the safety net to the safety pole. Together the longer and more durable springs, Spark will provide an extraordinary bouncing experience.Push Button Locking: The simple push button locking mechanism make the assembly & disassembly easier and quicker.Easy to Assemble: The Spark Trampolines are easy to assemble and come in 4 different sizes: 8-foot, 10-foot, 12-foot, & 14-foot.ADDITIONAL ADD ON ITEMS ARE SOLD SEPARATELY.