In reply to crayefish:
Another shout for the Crux AK47.
How any of you get a winter's day kit in a 30ltr, and still have room to faff whilst it blows a hoolie beats me.
Anyway, the thing I struggle with, as I work out of my van for many weeks a year, is the actual sack being wet, rather than the contents. I hear Toby, that some of them seem to shed water, but many do not, and the foam soaks it up, only to deposit it/let it evaporate all in my van, adding to the dampness.
The Crux is wipe down, and then dry, so great. I have found that internal condensation is an issue, so it is important to empty the gear out, and then leave it open for a short while to let the temperature level up, and then you don't get puddles.