Looking at this offering from Deuter, as its synthetic so good for damp Scottish weather but also crucially its stretch properties.
As a life long side sleeper and frequent turner in my sleep, I've always struggled (literally, and laterally in this case) with the standard mummy shaped bag, finding them constrictive and restrictive (I have a ME down mummy bag)
Anyone got experience of using this bag and comments on how successful the stretch feature is?