Super Jumper Enclosure for Trampoline The Super Jumper 12ft trampoline enclosure is made of PE mesh net and includes 8 poles and blue U-clamps The u-clamps are easy to fasten and help in firmly securing the net enclosure to the trampoline The rust resistant galvanized steel poles are covered with foam and are used as stand columns and firmly attached to the net The fine mesh nest has tiny holes to prevent fingers and toes from getting caught in it, yet another safety feature The enclosure comes with a zipper door for easily entering and exiting the trampoline