This A1 sidewalk sign is suitable for both indoor and outdoor use. Thanks to the heavy base and springs, the board remains stable during strong winds. The heavy round plastic base is equipped with a filling valve to add water if the base needs extra support. The 2 springs connect the base to the board so that excessive gusts of wind cannot break the board. The board has a double-sided silver click frame. Posters (not included) can easily be changed via the bottom edge, without the use of tools. The base is equipped with wheels and a handle to easily move the board.