| 摘要 |
<p>The shoe has a wheel (20) received between two side walls of a frame. Two shafts (21) extending from two ends of the wheel engage with respective notches of the frame. A release assembly located on an outside of a side wall has a board, and a plate extending from one side of the board. The plate inserted in a slot couples with one shaft. An extension extending from another side is accessed from outside of a sole (1).</p> |
