Tag Archives: Bellyache Mountain

Review: Big Agnes Down Sleeping Bag

I was in need of a new “3 season” bag as the synthetic bag I’ve used since I was 14 just doesn’t cut it anymore. I was looking for a down bag in the 15-20 degree range as that seems to be the best compromise between warmth, packability, and weight for a bag used primarily here in Colorado. Several options exist that fit those general criteria, but I ultimately chose a traditional mummy bag design in the Big Agnes Bellyache Mountain SL 17. Big Agnes is located in Steamboat Springs, CO and is known for several things – namely tents, sleeping pads and bags, but has also recently begun to dabble in the apparel market with a few down jacket offerings.Bellyache Mountain SL 17 Side View

The Bellyache Mountain fit a pretty good sweet spot in terms of down quality and fill weight – 700 fill, 21 oz fill weight and weights 2.3 lbs (measured) for the regular size. Big Agnes is one of a few manufacturers who offer down that has been chemically treated to repel water, thus maintaining loft and insulating properties when wet, and the Bellyache Mountain sports their DOWNTEK water repellant technology. The bag also has a nice draft collar around the neck as well as a draft tube down the length of the zipper. The draft tube has a strip of thicker nylon sewn into it to help prevent stuck zippers. Speaking of zippers, the bag is available in both right and left hand zipper configurations – which is nice as 2 bags can zip together for those fortunate guys with girlfriends/wives, or if you’re just one of those weird left handed folks. Read more…