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US Military 4-PC Weather Resistant Modular Sleep System with Waterproof Gore-Tex Cover
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easytapper
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14 Oct ’15 - 10:42 pm
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qid=1444876312&sr=8-2&keywords=modular+sleep+system

 

Me and my son do a fair bit of camping with the Boy Scouts.  Sometimes, these camp outs can be in less than desirable temperatures.  I've gotten quite tired of being cold at night.  So I decided to invest in a new sleeping bag.  Not sure how this popped up on my radar, but I decided to pick up two of these systems.  You can get them used for as low as $75 via eBay and even Amazon, but I opted for new equipment.  I didn't want to risk getting a smelly and/or damaged bag.  They're supposedly good down to below zero.  The biggest thing will be figuring out how to use it properly as there is little in the way of documentation.

We have a camp out scheduled this weekend, and overnight temperatures will be around the mid 30's.  I'll post an update on Monday.

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K
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15 Oct ’15 - 9:28 am
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interested to hear the update

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simthefarmer
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19 Oct ’15 - 11:16 am
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how big is it? looks like it would take a lot of space in the backpack

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K
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20 Oct ’15 - 8:47 am
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how did they work?

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easytapper
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20 Oct ’15 - 8:44 pm
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Sorry for the delay getting back to this thread.  I was really trying to sort out my feelings about this bag.

First the easy part.  Answering Sim's question.  It's pretty big.  It's probably 14-16 in diameter when compressed down and weighs approx. 10lb.  It's a little big for backpacking imo, but you could make it work.  Personally, I would strap it to the outside of my pack, rather than trying to fit it inside.

So on Friday, it was approx 45 degrees outside.  I was using all three components, and I expected to be HOT!  I normally sleep in just my underwear anyway (sorry if that's TMI), so I opted to sleep in my drawers and a tee shirt.  I was borderline comfortable.  There were moments when my feet felt like they were on the verge of getting cold and when I moved around, I could feel "cold spots" on the bag against my skin.

On Saturday, the temps dipped down to 32.  There was frost on everything when we woke up.  That night I slept in flannel lined carhart jeans, wool blend socks, short sleeved and long sleeved tee shirts.  In spite of the temps, while I was comfortable, the bag is nowhere as warm as I was expecting.  I'll probably never camp when it's below zero, but it would be nice to have that option.  One thing I did like was the bivy cover.  It covered my face, and it was nice to not have my face and head exposed.

It just seems like my experience isn't matching the reviews on amazon.  It could possibly be user error, but I doubt it.  I have another camp out this weekend (boy scout training) and will give the bag another try.  I think it's only supposed to be in the mid to low 40's though.  I'll continue to add on to this review as we use the bags more and more.

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21 Oct ’15 - 9:09 am
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seems it would be a lot warmer than that since it is rated for -30

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easytapper
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21 Oct ’15 - 6:28 pm
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KVR said
seems it would be a lot warmer than that since it is rated for -30

That's my thinking.  Although one person told me it gets it's rating for the additional gear you need to wear to make it effective.  ie thermal underclothes, pants, coat, etc.

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easytapper
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21 Oct ’15 - 7:14 pm
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Found this great review (much better than mine).

http://woodtrekker.b.....m-mss.html

As I said, I'll give it another try this weekend.  I'll take the whole kit, but think I'm just going to sleep in the green patrol bag on Friday (43 expected for the low) and maybe the bivy.  I will wear thin insulated underwear and socks though.

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