I seem to turn into an ice cube as soon as I stop moving about.
That'll make camping interesting!
Seriously, though, I'm wondering if there is a difference between being "at home" and on the road? Going from a (presumably) cosy indoor environment to a fresh, cool night outdoors can be a shock to the system. It's not so much that you are uncomfortably cold but that your body temp is dropping and that can feel really cold.
The reality of a day on the bike is that you'll be more acclimatised by being out all day.
Was warm enough at 8 C with my rather heavy fleece liner, fleece jacket & warm socks.
Not meaning to be critical but it strikes me that that setup is overkill for those temperatures.
However, being comfortable is essential for me and a good night's sleep is important to enjoy the next day. You're figuring out what works for you and in my book, that's more important than weight.
The liner & compression sack squish down to a package 27 x 21 x 16cm & weighs 891g
That has to be liner & bag?
Personally, I don't focus too much on weight. Something has a job to do. It's no good to me if it doesn't do the job, no matter how light it is. Sometimes I don't use the compression sack for the bag at all as I think it gives better packing options loose in the pannier.
My mat is a primacore inflatable.
That's Robbens - a decent brand, rated to 2.6 C. But that's not a standard measurement. If you run to cold then anything that can boost that will help.
It seems like your next step is an overnighter in the tent!
