Hmm, the idea of flaccid measurement seemed silly but I just tried and stretched it comes out about the same as when I'm hard. I guess it makes sense when you think about it, since the blood is just filling it to stretched capacity.
Just flaccid seems odd though since size can vary based on temp haha... Currently at 5" flaccid, which surprised me but it def gets smaller when cold.
Temps have a lot of bearing on my size. I can go from 2-2.5" flaccid to an innie when cold. My SPL measurement was 3.35" at the doctor on my last measurement, but when fully erect, I am close to 5"