Slider with a locking mechanism inside the body of the slider. This keeps the slider from moving on the zipper until the puller is grabbed and the locking mechanism is released. The lock automatically locks when no force is placed on the pull tab. In the semi-automatic slider, it locks only when the pull tab is lowered.
YKK, 2004, Zippersource, 2004
Context:
Alternatively, the water resistant side could be manufactured facing inwards using standard body auto-lock or non-lock sliders.
