Overall this is a decent bag. I have had it for 4 years and I feel it has lost a substantial amount of its warmth. I remember on my first few outings with the 3rd dimension I was very warm. On a winter ascent of Mount Sneffels I stayed warm down to around -5 F. Recently however, I have been cold in this bag around 15 F. I realize that washing a sleeping bag can affect its warmth rating and therefore I have only washed it once. I also store it in the cotton storage sack provided with the bag. Even so it is not nearly as warm as it used to be. I realize that over the years constant use and repeated compression wear down the polarguard but I don't feel it should have such a significant affect on the warmth (or lack of). For now on I will use the 3rd dimension as my 3 season bag and will probably go with Western Mountaineering for my winter bag. Overall I'm a bit dissapointed but still recognize that the bag excelled in its first year of use.

Customer Service

Never needed it. MHW is a quality company with great workmanship.

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This bag rated -18 in Canada. It's a pretty bulky bag and I wouldn't recommend it if you are a 5'6", 140 lb woman. It didn't keep me warm at 0 C, probably because it's too wide and a bit too long as are most 'Regular' length bags. If you are an averaged sized woman, try and find the "Small" size. With a compression sack however it can get nice and small.

this bag is killer. i used it for a two and a half week backcountry ski trip in the middle of california's high sierria's. this bag keepet me nice and cozy the whole night. me gusto mucho!

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After purchasing this bag in December of 1999 my wife and I set out to 'bag' some of our long time desired winter travel destinations (climbing @ Red River Gorge, Ky; skiing Telluride & Taos; & climbing Hueco Tanks & Enchanted Rock, TX.) Most nights were spent camping in temperatures that ranged from -5 to the mid 20's. At no time (while in the bag) did I ever get even the slightest bit cold. The draft tubes along the hood, collar, and zipper served their purpose in keeping the weather out and the heat in. Also, being 6'3", close to 200lb.'s, and with broad shoulders I was shocked to find that there was plenty of room to move around in. As for the compression issue that a couple others have mentioned, I found that a compression stuff sack seemed to reduce it to a very workable size for a bag that I would consider at least a -5degree bag.

A fantastic value for the money. This bag is probably one of the most comfortable that I have ever used. Though it doesn't compress down as far as i would have hoped, it is still extremely versatile and warmer than than it is rated.

This has got to be the best synthetic 0 degree bag out there. I was comparing products (TNF Snowshoe and Marmot Merlin and Cloud 9) and realized that this was the only bag with a draft tube, besides the Cloud 9 which is too expensive-$240 compared to 265 which has stormlight. It just shows mountain hardwear's quality, and plus they add extra insulation to make sure that the bag meets the temperature rating and slightly exceed it; usually by around 5 degres(moonstone also does that). The stormlight helps keep water completely out of the insulation from condensation, light precipitation, etc. The draft tubes seal in heat and keep out cold nicely. Plenty of room for me.

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i used this bag for the first time inthe smokies on new years eve (21st bithday) -15, 30MPH WIND, 1 FOOT OF SNOW
it was well worth the money WHAT WAS THE RATING OF THIS BAG I'm not quite used to sleeping in a bag breathing recycled air, but it was better than getting frost bitten
i tried it out last week in the mid30s to see if it would be to warm for my next hike......not a problem w/shorts and a t-shirt

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I got this bag on sale so I payed 175 with two days shippping. It is pretty good bag and I havent had any problem. I only think its quite heavy. I used in my last expedition to cotopaxi 20,000 feet and i didnt had any problem
really good bag
Juan

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I also have a down upgrade which zips in nicely. The Dimension has kept me warm many evenings in the NC Mountains. It is sufficient for my needs in cold weather and combined with the upgrade is unstoppable in the extreme cold. With a nice compression sack you can stuff this thing anywhere. My favorite aspect is the length. I am 6'2" and the bag fits perfect.

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This has got to be the best synthetic bag out there! It is very comfortable, warm, and well built. This bag is well worth the money. I previously owned a Sierra Designs Sandman and my 3rd Dimension blows it away. Mountain Hardwear knows how to make good products.

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