condensation inside PacLite?

This is might be insensible perspiration condensing on the cool inner surface of the jacket.

I found the following expanation of types of perspiration here

We perspire in two different ways. Sensibly and insensibly. Sensible perspiration is sweat that is excreted in large amounts and is noticeably moist on the skin. Insensible perspiration is sweat that evaporates from the skin before it becomes moisture and we are therefore unaware of it.

I dont know if leaking is your problem, but if it is you may solve it by sealing the seams in the shoulders, if not you may find modifing your jacket to include pit zips improves ventilation.

since the moisture was mostly in the sleeves and legs, there may be water coming in from the openings in the cuffs, elastic may solve this problem, or even a ruber band around the rists and ankles.

Jim – thanks for this, probably this is the answer I was looking for

Ryan: thanks for the tips; the seams on both pieces are taped already and i have pit zips (as well as core pockets) which I use; the shells also have elastics / cuff tabs but I wore them a bit loose so this could explain the dampness build-up there

cheers
Ivo

When biking, the arms are most exposed to the wind and convective heat loss, maybe that’s why your insensible perspiration condensed there where the shell fabric had a lower temperature