Gear Review
Why take more?
By Tom Gordon
Ranked #79 - 0 to -40 Degree Down Bags
October 25, 2010
OK...in truth I've never used this bag. I only wish I'd taken it to Denali when I was old enough (young enough) to enjoy it! The "-40" bag I used to climb Denali (one of Earth's coldest environs) was a shadow of this bag. That was 1980 and I didn't know about Western at that time. This bag is astoundingly thick and warm for its 3 lbs. 4 oz. By most accounts, most users of this bag will swear that it's good to -40. Certainly with a tent I would have no question about that. The shell is surprisingly water resistant. Buy the Gore version if you want the ultimate in warmth and water resistance for snow caves and igloos. The inside of the foot section is slightly burlier fabric for placement of boot liners or full boots that have frozen to your feet. (happened to me!) By the way, this is not licence to crawl into your bag with crampons in place! Want the maximum in warmth/weight/compressibility? You're looking at it.
View Details: Western Mountaineering Puma Super MF Sleeping Bag: -25 Degree Down
Helpful Votes: 0 Yes
Tech Specs:
- Material:
- [shell] MicroLite XP, water-resistant coating; [lining] nylon
- Insulation:
- 850-fill down
- Shape:
- mummy
- Draft Collar:
- yes
- Max User Height:
- (short) 5 ft 6 in, (regular) 6 ft, (long) 6 ft 6 in
- Shoulder Circumference:
- (short) 62 in, (regular) 64 in, (long) 66 in
- Hip Circumference:
- (short) 55 ips, (regular) 56 in, (long) 57 in
- Foot Circumference:
- 39 in
- Stuff Size:
- (short) 9 x 18 in, (regular, long) 10 x 20 in
- Stuff Sack:
- yes
- Storage Sack:
- no
- Degree:
- -25 F
- Weight:
- (short) 3 lb 4 oz, (regular) 3 lb 7 oz, (long) 3 lb 10 oz
- Recommended Use:
- mountaineering, winter camping, backpacking in the brutal cold
- Manufacturer Warranty:
- 1 year
Change me.



2 Comments Last Reply: December 24, 2011 By: Shawn K.
For anyone interested, here's what Western Mountaineering says about Gore Windstopper 830 Fabric: "Our Gore Windstopper fabric, manufactured by W.L. Gore and Associates, is the most weather resistant/breathable fabric available and provides the ultimate protection against moisture and condensation. The face fabric is a 273 thread count 30 denier fabric that weighs 1.1 ounces per square yard. This is the lightest and most compressible Gore Windstopper fabric available and the one with the softest hand. After laminating, it's finished weight is about 1.7 oz. per yard. The breathability of the Gore Windstopper membrane reduces the threat of condensation while remaining plenty water resistant for the needs of a sleeping bag. Use Gore Windstopper sleeping bags in damp or extreme conditions to prevent moisture from reducing down performance. Some winter conditions may require the use of the Hot Sac vapor barrier liner to provide the most optimum performance." http://www.westernmountaineering.com/ind ex.cfm?section=about&page=Product%20 Details&ContentId=4#6
Helpful Votes: 0 Yes
If you want the ultimate for warmth and water resistance in snow caves and igloos buy yourself and ultralight event bivy sack instead. You don't the the gore-tex shell on your sleeping bag to be your last line of defense against a wet bag in those conditions. Get real dude.
Helpful Votes: 0 Yes