Of course that isn't the case-the reality of the trick is actually to be found in the box. In one form of this trick, the inside of the box is lined with foam rubber, letting the assistant curl up inside the box, pressing up tightly against the walls and end of the box.
以「人體拉腰箱」為例，內部其實暗藏一個以塑膠軟墊製成的內箱，當模特兒進入箱內，就可隨著內箱的空間曲線以「＼」型傾斜身子，同時貼緊箱壁與箱頂。