Phil Foster wrote a review of MontBell Super Spiral Burrow #0 Sleeping Bag: 0 Degree Synthetic on August 8, 2012
I absolutely love these sleeping bags. I have the super spiral #1 and my wife has the #0, they are definitely high quality. I am 6'2 and 250 lbs and can still sit up in this bag and sit indian style comfortably. Though my bag is a 15deg. bag the material is such a tight weave that it holds the heat in wonderfully. It is by far the most comfortable bag I have owned.