An umbrella comprising: a hollow pole ; a shade assembly coupled with an upper portion of the hollow pole , the shade assembly comprising: an upper hub , a lower hub , a shade structure coupling the upper hub to the lower hub , the shade structure supporting a shade member , wherein the lower hub is moveable along the hollow pole ; a guide rod coupled with the upper hub at a first end, a second end being disposed within the hollow pole , the guide rod having a stop surface; a counterweight system disposed within the hollow pole , the counterweight system comprising a ballast and a cord having a first end coupled with the ballast and a second end coupled with the lower hub ; a locking device comprising a moveable locking surface disposed on the hollow pole and a pushrod mechanism , the moveable locking surface being sized to overlap with the stop surface to lock the umbrella in an open state, the pushrod mechanism comprising a pushrod extending below the lower hub ; wherein when closing the umbrella, the pushrod mechanism moves upward disengaging the moveable locking surface from the stop surface of the guide rod , allowing the lower hub to be moved downward and the ballast to move upward. a hollow pole ; a shade assembly coupled with an upper portion of the hollow pole , the shade assembly comprising: an upper hub , a lower hub , a shade structure coupling the upper hub to the lower hub , the shade structure supporting a shade member , wherein the lower hub is moveable along the hollow pole ; a guide rod coupled with the upper hub at a first end, a second end being disposed within the hollow pole , the guide rod having a stop surface; a counterweight system disposed within the hollow pole , the counterweight system comprising a ballast and a cord having a first end coupled with the ballast and a second end coupled with the lower hub ; a locking device comprising a moveable locking surface disposed on the hollow pole and a pushrod mechanism , the moveable locking surface being sized to overlap with the stop surface to lock the umbrella in an open state, the pushrod mechanism comprising a pushrod extending below the lower hub ; an upper hub , a lower hub , a shade structure coupling the upper hub to the lower hub , the shade structure supporting a shade member , wherein the lower hub is moveable along the hollow pole ; a guide rod coupled with the upper hub at a first end, a second end being disposed within the hollow pole , the guide rod having a stop surface; a counterweight system disposed within the hollow pole , the counterweight system comprising a ballast and a cord having a first end coupled with the ballast and a second end coupled with the lower hub ; a locking device comprising a moveable locking surface disposed on the hollow pole and a pushrod mechanism , the moveable locking surface being sized to overlap with the stop surface to lock the umbrella in an open state, the pushrod mechanism comprising a pushrod extending below the lower hub ; wherein when closing the umbrella, the pushrod mechanism moves upward disengaging the moveable locking surface from the stop surface of the guide rod , allowing the lower hub to be moved downward and the ballast to move upward. <EOS>