Abstract: A safety warning device includes an integrally formed telescopic warning body which is a flexible bellows-shaped tube having a bottom end, a top end, and a bellows section connecting the top end and the bottom end. As a result, the telescopic warning body can be compressed and elongated by an external force, thereby minimizing the volume and facilitating the moving of the safety warning device, as well as achieving the goal of extending the usage life and having better safety.

Abstract: A safety warning device includes an integrally formed telescopic warning body which is a flexible bellows-shaped tube having a bottom end, a top end, and a bellows section connecting the top end and the bottom end. As a result, the telescopic warning body can be compressed and elongated by an external force, thereby minimizing the volume and facilitating the moving of the safety warning device, as well as achieving the goal of extending the usage life and having better safety.

Abstract: A baseball batting-training apparatus includes a base plate having a plurality of upright stub tubes, a telescopic stick selectively inserted into one of the upright stub tubes and adapted to hold a ball for batting, and a lock nut threaded onto the selected upright stub tube to lock the telescopic stick in position.