I tested this bag in fall 2012. At 2#6.4oz it was a bit heavier than advertised. Though it seemed to add considerable bulk, the waterproof breathable membrane was a strong sel…
- Ati, 01/25/13

Was excited when I received this bag due to positive reviews I read. Got it out of the shipping box, and tried the cinch cord to close the hood around my face. It hardly cin…
- Lisa, 11/29/12

One neat feature is how unbelievably lofty this bag is. As soon as its unstuffed it swells up like a zeppelin, except so far it hasn't caught fire (which i appreciate, althoug…
- CHARLES A, 08/04/10
DC from Knoxville, soon to be San Francisco

This was recommended by a friend who's done extensive work in the Arctic and has used a Lithium for years. I got one for a trip to Nepal. It’s long for me (5’4”) but I l…
- Victoria, 09/12/12

I purchased the Plasma 30 because I was looking for a way to lighten by pack. Though it feels delicate, I found to be tougher than it appears and held up beautifully durin…
- Keith, 08/20/11

I recently had the pleasure to slumber in the plasma 30 for 6 nights in vermont. The temperature dropped to a chilly 20 degrees F and I still found myself extremely toasty. Ma…
- Alex, 10/24/12

I bought this bag because it became much to cumbersome to haul around my Kelty 0 degree bag on backpacking trips. I've had it for about a year, and I love that this bag came w…
- Landen, 01/07/13
Marquette, MI

I have used this sleeping bag several times this spring, I have not really tried in in lower temps (below 30) since it was so warm this spring. Overall it is very conformable…
- steve, 04/18/12
Fort Wayne, IN

Very lightweight bag, comfortable fit, and kept me warm. However, we had some condensation issues in our tent and I ended up retaining some moisture (on the exterior of the ba…
- Mack, 08/28/08
Columbus, OH

Got this bag to do some backpacking outside of Durango, Co when the weather was a bit chilly 15 degrees or so. This bag kept me plenty warm. Other bonuses super light and with…
- Jeremy, 12/13/11
Peoria, AZ

Took this bad boy out camping and was super comfy and warm down to around 40. It packs really small, and fills out nicely when you take it out. The one thing is the stuff sack…
- Nick, 01/22/13
Texas

I got the long because I am 6'-3", 210 lbs and it is a very comfortable fit. I considered the mountain hardware phantom series of sleeping bags and chose this one due to the…
- Jared, 10/18/11
Rensselaer, NY

I got the long, extra wide, not because I am oversized, but because I wanted a little more room with the benefits of a mummy bag. I loved it. I could move my legs easily and…
- Bill, 05/19/13
Columbia, PA

I got this sleeping bag for a trips up through the Rocky Mtns, This thing has helped my weather some very cooled nights. Teamed up with sleeping bag liner, the light weight…
- Michael, 12/17/11
Colorado Springs

Marmot makes top quality bags and this is no exception. I've had the Helium for a few yrs and the only thing that I'm not ecstatic about is that it doesn't have a true draft…
- Steve, 12/07/11
TN

Light weight, perfect for summer camping!…
- john, 08/03/12

I bought this because I did not want to lug my old Coleman around. It is light and stuffs into the included sack perfectly. It was raining and cool around 60 in the day and…
- peter, 07/09/12
Rochester

Got this a couple of years ago with no intention of ever camping in really cold conditions, but it's plenty warm when I have needed it to be. The zipper is really nice and doe…
- Wyatt, 05/20/12
Miami, FL

This was one of the cheaper sleeping bags I found but it's really nice. I bought it for my husband who is 6"2ish 240lbs and it fits him well. We haven't taken it out yet but i…
- Jason, 06/08/12
Cincinnati

I can travel with her, hike with her, carry her around and sleep with her. She goes everywhere with me and everyone I know is jealous because they wish they had one too. I…
- JOHN, 10/16/10
GAINESVILLE

This bag is super light and its comfy temp is a little less than the 40 stated. I feel I would be alright with a base layer down to 32 but have not got a chance to test at tha…
- BRYSON, 02/25/08
SPRUCE PINE

Great bang for buck, doesn't come much better than this. Have used this bag down to -15deg Celsius in the snow and still stayed warn. Sure it's not the lightest and a little o…
- Mark, 08/04/12
Sydney Australia

Got this for my son that is in boy scouts. They camp in any weather. It kept him warm. He was loving it! He will be using it all winter on trips. Will keep you posted if a…
- Cheryl, 11/08/12
Ohio

Very warm, it is aptly named. Very comfy too. I sometimes have to sleep with it unzipped, but this was on a warmer mountain night. Looking forward to using this when I camp at…
- Timothy, 07/09/12
Seatle

When you need a bag that will tolerate cold temps as well as wet conditions this is a great option! I used this for two weeks in SE AK getting crapped on the whole time and I…
- dustin, 09/27/12