I've got a Belgian Army Jigsaw Camo Gore Tex bivi bag (like: http://www.ebay.co.uk/itm/Belgium-Ar...#ht_1332wt_905)
It's in good condition, weighs 980grms (not 1.4kg as the listing) and is very spacious. Also easy to get in to and out of thanks to the L shaped zips.
I'd like to swap it for a Wild Stoves wood gas stove if anyone has one going spare.
Let me know if anyone is interested.