Anun - What you are showing below is for groundable static control garment systems. Meaning, a garment used as part of a grounding system should have a ground cord connection on it. Most of the smocks I have seen in Sanmina are not an integral part of the grounding system, so do not have a ground cord connection (snap) on them.
Currently, within Sanmina, we use foot straps (shoes) and/or wrist-straps as part of the system, not the smocks themselves.
Hope this helps.