The JumpKing 55 Inch Trampoline with 3-pole enclosure system can be used both indoors and outdoors. The enclosure poles attach to the trampoline using T-connectors. Our patented G3 poles suspend enclosure netting. Enclosure features a long-lasting premium polyethylene net with JumpKing logo. Hours of fun for little bouncers and a great way to burn off energy Enclosure creates a fun-jumping environment without limiting visibility. Easy access door on enclosure system. The total height of the trampoline and enclosure is 57 inches. Children should always be supervised by an adult while jumping.