Nowadays, the design of shoelaces for sports shoes is becoming more and more convenient, among which the knob shoelaces are a very convenient shoelaces design, which can easily loosen the shoelaces.

　　1 Knob shoelaces generally combine shoelaces and use a knob to control them uniformly. The knob is generally located directly above the shoelaces or behind the shoes.

　　Compared with ordinary shoelaces, the knob shoelaces can be operated with only one hand, and will not fall off basically, which is very convenient. The knob can generally inform the tightness and fixation.

　　3 knob The knob of shoelaces is generally in a fixed state when pressed, and can only tighten the shoelaces, but not loosen them. Therefore, when we tie the shoelaces, we first press the knob and then rotate to tighten the shoelaces.

　　Some high-end shoes will have two knobs to control, so as to adjust the tightness of shoelaces more carefully. The operation is basically the same. When we need to loosen shoelaces, we need to pull the knobs up.

　　After pulling the knob up, the knob can only rotate in one direction, and then it will loosen the shoelaces, so that we can loosen the shoelaces.

　　6 The operation of the knob shoelaces mainly depends on the position of the knob. When the knob is pressed, it rotates to fasten the shoelaces, and when the knob is pulled up, it rotates to loosen the shoelaces, so it is convenient to distinguish operations.