Old spec ok

As my current reading spec left holder is loose, I have to use a new one. Furthermore, I dread using it for the jamming session with the big frames and it looks bad when it is hanging loosely.
I decided to "re"use an old reading spec which is in good condition and smaller frame. My problem with specs, may it be reading or sunglass, if it does not fit my specification, I would immidiately experience diziness and headache through out the day (if it is that bad). And you know what I doint feel such with this "replacement" spec in fact it looks clearer and sharper.