The JOOLA WM Ultra Table Tennis Net Set is the premium net set used at the elite level of competition in the US Open and US Nationals. It has a unique double woven cotton-iron yarn net with adjustable height and tension features. The net is held up by two solid metal posts with rubber-padded tightening clasps to secure the posts to the table. The JOOLA WM Ultra Net Set comes with a standard net height/rubber thickness ruler in a plastic zippered carrying case for storage and transport. It is International Table Tennis Federation (ITTF) approved for professional competition.