Tp genius round enclosure 12 ft trampoline the tp genius round enclosure 12 ft trampoline features a new igloo door entry system the bouncer enters the trampoline through an igloo like tunnel the unique patent protect design provides a super safe bounce back system to keep jumpers safely on the trampoline this also is designed to completely enclose the springs inside the trampoline making them inaccessible and therefore protecting the user from spring related injuries for added safety