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Slumberjack Ultimate 20F Regular Right Sleeping Bag
By: Slumberjack       Average Rating: 2.5     Total Reviews: 9
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No way is the 20 F rating correct.     On: 2008-06-02

Used in 26 degree weather with fleece and socks. I would have frozen if I wouldnt have boiled water and put in lexan containers then wrapped them in fleece. While trying to keep warm near the fire. The sparks easily burned little holes when they hit the nylon shell. In warm weather it would be fine.
40 degrees, not 20     On: 2008-02-08

May be a great bag for mild fall/spring weather. Just dont use it if any temp under 40 expected.
Got caught in the appalachians in 10-15 degree weather... Spent the night in all my clothes/coat and emergency blanket on thermorest in 3-wall trail shelter but still shivering uncontrolably
Temperature Rating Is Very Optimistic     On: 2007-09-14

I bought this sleeping bag because it compressed nicely into a 7.5 x 12 inch sack. It works well in temps above 40 degrees. However, in a tent with a thermarest pad, at below 40 F, I got cold, even with some thermal underwear. I would be very careful taking this bag into temps below 40.
Perfect all-purpose sleeping bag     On: 2007-09-05

This is a great bag for all-purpose camping/backpacking. I liked mine so much, I bought 2 more for my teenaged Boy Scouts. This bag has been a great bag for us on multiple trips ranging from summer camping in MInnesota/Wisconsin to high-adventure backpacking in the Rocky Mountains of New Mexico.

These bags give a bit more room in the hips and legs than a standard mummy bag. We also like the zippered foot vent during warmer seasons. I recommend this bag down to approximately +30 degrees F unless you buy the optional fleece liner, which I plan to buy for winter camping.
Temperature Rating is Inaccurate     On: 2007-02-07

This sleeping bag seems like a really good deal with the temperature rating, but still being small and lightweight. However, its not worth it. The temperature rating on this bag is no where near 20 degrees. It should probably have around a 45 degree rating. Its a good, compact sleeping bag, as long as you are aware of the temp discrepancy before you buy it.
temp rating seems off     On: 2007-01-10

Temp rating of 20 F seems a bit off. I spent a relatively cold night near LA this winter. It was no where near 20, must have been low 40s. Actually my feet were cold, so it seems like the foot box thing is not working well.

Very light and packable. So its perfect for backpacking. The material and construction (zips, etc) seems solid. I like that the zip is only half-way. The draw-strings to cover your head are also very nice. It has 2 separate for the overhead cover and one near the neck.
temp rating seems off     On: 2007-01-09

Temp rating of 20 F seems a bit off. I spent a relatively cold night near LA this winter. It was no where near 20, must have been low 40s. Actually my feet were cold, so it seems like the foot box thing is not working well.

Very light and packable. So its perfect for backpacking. The material and construction (zips, etc) seems solid. I like that the zip is only half-way. The draw-strings to cover your head are also very nice. It has 2 separate for the overhead cover and one near the neck.
Compact and warm     On: 2006-11-26

I have owned and used many sleeping bags but I now prefer this bag to many much more expensive sleeping bags. The Ulitmate has kept me warm down to 24 degrees. Temp rating seem to vary but this one has been dependable and warm for me in the low 20 degree range.

The compact stuff size is the real bennefit of this bag; the smallest in my collection of 20 degree sleeping bags.

I also like the zipper in the foot for hot nights.


Compact and warm     On: 2006-11-25

I have owned and used many sleeping bags but I now prefer this bag to many much more expensive sleeping bags. The Ulitmate has kept me warm down to 24 degrees. Temp rating seem to vary but this one has been dependable and warm for me in the low 20 degree range.

The compact stuff size is the real bennefit of this bag; the smallest in my collection of 20 degree sleeping bags.

I also like the zipper in the foot for hot nights.


Unaccurate temp rating (and potentially dangerous)     On: 2006-10-14

Ive owned this bag for two years and have camped with it both in the Cascades and Appalachians. When initially evaluating the bag, I was excited to find a 20-degree bag in the 3-lb range, at an attractive pricepoint. My first night on Frosty Mountain in 34F temp made me regret that decision - I got about 1 hour of sleep after shivering the remainder of the evening. This was also in conjunction with a closed cell pad. Ive tried sleeping with clothes on, with clothes off (clothes off seems to allow the bag to "cook" you more). On later trips, I started using REIs thermarest knockoff with a n R-value of 3, rather than closed-cell foam. Still, no improvement in comfort.

Basically, this is an okay bag down to 45F. Between 45F-40F, youll need to definitely enclose the hood tightly around your face to minimize leakage (and youll still be cold). I would not use this below 40F - EVER! Youll have a bad sleep and not enjoy the next days hike.

One cool feature about the bag is the pull strings on the hood - there are two cords - one that cinches the top of the hood, and a different one for the bottom. The manufacturer wisely made each cord of different diameters to make it easier in the dark to "know" which one you need to cinch to enclose your hood.

When I purchased this bag, I was still new to backpacking. Since then, Ive found far superior products at comparable pricepoints. If you are evaluating this bag, you are also probably new to backpacking and are trying to minimize the cost while you gear up. My advice is to spend money on a good bag - you wont regret it.

As for the SlumberJack....mine is getting replaced with a nice Western Mountaineering Kodiak. I will only use the Slumberjack as a backup bag for guests during summer months.
great buy     On: 2006-04-09

This is an ultimate backpackers dream bag. Its light, durable, cozy, and packs smaller than any other bag I can find in this country. Hey, it even comes in its own compression sack. As for temperature ratings, everyone is different. Just because it says 20 degrees, doesnt mean you will be comfortable in it at 20 degrees. You might be hot, or cold, it depends on many different personal factors such as clothing, metabolism, etc. The foot vent is new to me, I like that its enclosed in mesh to keep critters out. I would prefer that the zipper on the bag was a full length zip instead of just half zip...but thats no big deal to me. My other sleeping bag is a Vango (summer rated bag) and Id have bought another one of those in a heartbeat if they were available here in America. They come even smaller than this one, but are generally more expensive and shipping it from England would be even more expense on top of that. Overall I think this is a great bargain and am likely to buy another for my spouse.
2 Freezing Nights     On: 2006-02-28

I tried the Slumberjack Ultimate Extreme 20F on 2 seperate camping trips, 26F, 35F. On the 35F trip I was uncomfortable but managed some sleep. On the 26F trip I was freezing. Lucky for me, I had also packed a Fleece Quilt.

SlumberJack"s degree ratings are incorrect and they over rate their products. I would not recommend any SJ product for this reason.

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