------------- Baby Milk Action is a non-profit organisation which aims to save lives and to end the avoidable suffering caused by inappropriate infant feeding.
http://www.babymilkaction.org/
Oh well, the old fashioned way.
Cotswold Outdoor do a 3 season down bag, not a mummy but not quite square. Made by Macpac the escapade 700.
Well used this weekend under canvas without EHU.
P
The new SnugPak softie elites have a special extra streachable panel arrangement which expands the bag for movement and airflow when warm. It zips away as an zip baffle to tighten up the bag and retain heat when cold. They also have a box structure foot area to prevent restriction at the foot end. In fact the foot area is strengthened to allow the squaddies to sleep with their boots on! Only downside is a little extra weight but at just over 1k for the elite 3 I think it is bearable. Compresses down to a palm sized ball too.
All the freedom of a square bag with the extra warmth of a mummy when needed.
They're square and have plenty of room, and seem pretty good for performance (haven't tried it in cold weather yet), and they do zip together. Not bad prices here too.