Neil wrote a review of Marmot NanoWave 55 Sleeping Bag: 55 Degree Synthetic on September 22, 2012
Familiarity: I've used it several times
I bought this bag to replace my 15 year-old sleeping bag and went from a 32 degree bag to this (I run hot).
The first time I used it I was thrilled:
A.) it was the size of my nalgene bottle and therefore fit into my saddle bags on my bike very easily.
B.) It's incredibly comfortable and warm for its size. ( I ended up trying to sleep in a hammock with no pad in 40 degree weather, got a little cold, but not the bag's fault - it worked for most of the night!)
Great product, recommended it to my mother, would buy again.