Unique and stable clamp grasps post at approximately 74" above the floor to eliminate interference with required post padding. Widened platform and taller side rails increase official’s comfort and safety. Floor friendly wheels allow easy transport to and from storage. When in use, sits on non-slip rubber floor pads. Heavy-duty 1"diameter tubular construction is covered with 1" thick matching gray vinyl covered foam padding to meet all NCAA, National High School Federation and USVBA rules. Made in the USA.