Fair enough.

I have a comfy 2 season bag, and to make it extra warm, probably more 4 than 3 season, I use a fleece liner. I've used silk before (and still keep one in case of coldness, and it's warm, but tends to rip at the seams.

One advantage of mixing like this is you cantravell lighter in warmer times and aren't stuck with an overly warm bag.

I'm not as tall as you, but I probably equal you in girth (!), my bag is a Vango Ultralite 300 and packs down to 190x270mm, the fleece is a Eurohike 600g liner a little smaller than the bag. The silk is the size of a cigarette packet

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