Casey H. wrote a review of Mountain Hardwear Lamina 20 Sleeping Bag: 20 Degree Synthetic on August 4, 2010
I love this bag, it is true that you have to be a little careful with the zipper, but Mountain Hardwear makes the softest sleeping bags that come with the best stuff sack. I had another 20 deg bag from 2008 that was stolen (so sad!). I looked at some other options in stores and none that I have seen are as cozy as Mountain Hardwear. I will always recommend this company for sleeping bags. I think synthetic is always the best way to go, it stays drier and it keeps its form better than down. I used the bag this past weekend at a festival, it only got down to about 50 deg F at night so I definitely didn't have a problem.
Bottom line, comfortable and warm.