Kelty has introduced a Berry Compliant Jungle Sleeping Bag which will insulate down To 45 deg, even when wet thanks to the Apex insulation. Here you can see how small it compacts for storage.
Available now from www.keltytactical.com.
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That looks very similar to the Marine Corps 3 Season bag. I’d like to hear if anyone knows how the specs stack up between the two.
Just looking up Apex as the insulation, I’m almost certain the USMC 3 season bag isnt using a continuous fiber filament. I’m sure others can correct me if I’m wrong, but longevity and loft retention on this bag will be significantly better across almost every measurement criteria.
I was pretty sure the USMC 3S does use continuous filament but I’m just guessing as well, I cut and sewed mine a bit but I didn’t look super close.
From my 3-second pinch test I’d feel pretty good saying the USMC is significant’y warmer, and strangely enough, uses a lighter shell fabric.
The bag looks great. I have never experienced something that is “warm when wet” tough. Wool and primaloft / climashield are better than cotton, but for me wet = cold. Very interesting if someone came up with a solution to this.
Since it’s a “jungle bag”, why didn’t they make the zipper longer (for ventilation) and add mesh bug screen to the face area and behind the zipper?
It’s cool that is insulates even when wet, but who wants to sleep in a wet sleeping bag? Why not make the outer cover a waterproof material? Probably due to weight and cost restraints.
waterproof sleeping bags are a fools errand, not only are they heavy and expensive, but more importantly they slow dry time and trap moisture inside the bag. Often water from the inside (wet clothes or people) are a bigger concern then water from the outside, and a separate bivy sack is a better solution anyway.
Additionally the lifespan of waterproof breathable fabrics are different then the lifespan of sleeping bags, so you can hobble one by slaving it to the other.