Kyle K.wrote a review of Sierra Designs Ridge Runner 0 Sleeping Bag: 0 Degree Down on January 10, 2013
Familiarity: I've used it once or twice and have initial impressions
Just recently got this off SAC
??Was a bit surprised that a 0 degree bag would come with no front draft collar to seal around the neck. This is a major oversight in the design. Even the rear neck draft collar is a bit skimpy. This makes it impossible to seal in the air your body had warmed and you feel it blowing out past your face every time you move. The zipper draft tube just continues all the way up and around the top edge. This may be a good way to eliminate several steps in the manufacturing process, but this is not a neck draft collar, this is the part that should be on your face when you cinch the opening all the way down to a blowhole. Keeping that part down on your neck will leave way too much exposed in zero degree weather & let tremendous amounts of heat escape. It also bunches up when drawn closed and does not seal.
The upper face gasket, around the hood is also very skimpy and does not prevent the cord from pressing into the bridge of my nose while again, not providing a good seal to trap heat.
??Aside from that, several of the baffles over the torso area are missing a substantial amount of down compared to the leg area and top of the chest, the one over the abdomen being nearly empty, it's impossible to distribute it enough that there aren't complete voids in the insulation. There is no way I can trust this bag to keep me warm in zero degree or anything close to it.??The bag came with a cotton storage sack which probably should be a bit bigger & a stuff sack. A compression sack instead of a stuff sack would have been much preferred.
600 fill Down, on the economical side resulting in a bit larger stuff sack size.