I would never, ever inject through clothing. In the first place, I’m relatively thin and have limited territory with enough fat to inject. In the second place, much of that limited territory is even with or below my navel. And in the third place, I bruise easily that I find that often almost half of my available territory is bruised and I need to avoid for a current injection. So I need to see what I’m doing.
Because of the above, I normally inject in the car before I go into a restaurant or I inject in the restroom. In the four-plus years I’ve been on insulin, the first times I injected at the table in a restaurant were on a trip we took earlier this month. The first time was at a very elegant restaurant, but there was a long tablecloth behind which I could hide, plus I allowed my menu to extend over the edge of the table so the people at the table across from us wouldn’t have been able to see me exposing my belly. We were also fortunate in that that group’s food arrived just as I was getting ready for my injection. They were far too busy with their food to pay any attention to what I was doing.
The second time on that trip was at a truck stop type of restaurant in the wee hours of the morning. There were few other customers at that hour, so it was mainly doing my injection when the waitresses were busy elsewhere and not in the line of vision. But through my clothing? Never!