Patented 360° hinges allow users to move legs in all directions while sitting - not just forward and back! Design also keeps knees level during movement, so they don't bang the desk or table. Textured pedals keep feet from slipping. Metal frame resists wear and tear. Handle and folding design allow for easy transport. Not intended for commercial use. 18"L x 14"W x 25"H; 11 lb.