JAS5308597 wrote a review of The North Face Wasatch Bx Sleeping Bag: 40-Degree Heatshield on February 9, 2012
this sleeping bag is sick. en rating suggests a low of 19 degrees with a high of 52. havent used it in the field yet, but just from inspecting the quality of the materials and craftsmanship in the making of the bag, i can tell it is going to be a solid sleeping bag. currently using a Marmot aspen minimalist 40 bag, (which is far from disappointing itself) i can immediately tell this new TNF bag is going to be my go to. it packs up almost as tight, and just seems to be a better bag all around. especially for fall and spring time. if anything changes after field testing, i will be back online to edit.