May be I'll experiment with this laundry marker I already have by writing one label and putting it out. My next garden season will be after summer, in June. At present, winter time, will last for a few more weeks.
I too faced this round neck shirt front-back problem. So I stitched a little label from another old one on the left chest, even though the maker label is already stitched on the neck. If we wear the wrong direction, we get chocked!!