Briton Cannon wrote a review of MontBell U.L. Super Spiral Hugger #1 Down Sleeping Bag: 15 Degree on October 18, 2011
So my inaugural use of the sleeping bag in question, was on a two-day trek down the Virgin River Narrows in Zion National Park. The river was ANGRY that day I tells you. Mostly because the flow rate was so high because it had rained for many days prior. Mostly. To make a long story short, we arrived at our backcountry campsite much later than anticipated because of slow-going in the river crossings. I was cold, wet, and had some sort of rash from taking a dump in the bushes! Anyway, to crawl into the MontBell Ultra-Lite Super Spiral Hugger #1 Down Sleeping Bag (Long Edish) was like being back in mother's womb. I felt warm, encumbered, safe, and all with freedom to move about inside. It wasn't terribly cold that evening, but the bag regulated the warmth pockets so well that I didn't need to exit it for anything that night, save nature's call. I slept better in the backcountry that night than I have in years, and I accredit it all to the proper gear I brought. Buy this phenomenal sleeping bag my friends; you shan't be disappointed.