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It gets cold at night. Don't be caught underestimating this basic principle the next time you go camping; bring the warm bag. The Alps Mountaineering Crescent Lake 0 Degree Sleeping Bag can hang with the big boys in just about every area except for price. Techloft+ insulation is lightweight, extremely packable, and unlike goose down, retains over 70% of its insulating capabilities when wet.

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Not for lightweight backpacking but WARM

  • Familiarity:I've put it through the wringer

The specs will tell you how big and bulky this bag is. There's no better value for a 0 degree bag. I've used it backpacking and yes, it's heavy, but so is everything in the winter. If I could afford something smaller and lighter I would bring that, but this one allows you to get out there and enjoy winter camping and backpacking.
Construction is solid (comparable to my EMS, Mountain Hardware, and Big Agnes bags) and I expect it to last pretty much forever. The hood/collar isn't as fancy as on some other models but it keeps the cold out well enough.
Since this is so roomy, I can put my summer bag (women's 35 synthetic) inside it and enjoy super freezing cold temperatures!


  • Familiarity:I've used it once or twice and have initial impressions

The sleeping bag is rather bulky. However it is very comfortable. I'm 5' 11 and a half inches 175lbs and I fit in the bag with plenty of room to roll over from sleeping on my back to my stomach or even bring my legs up and sleep in a little ball. Its more of a camping bag than a backpacking bag in my opinion. Overall wonderful bag. I look forward to using it to sleep in comfort this winter.

Bulky and HOT

  • Familiarity:I've used it several times

I love this sleeping bag, its super toasty and cozy, and so plush you dont need any cushion except grass. Honestly it would be my bag of choice except for how massive it is. Even with the Cyclone stuff sack this bad boy takes up too much room. Perfect for car camping or if you only have a mile or two to lug things in. I hiked about 7 miles with it and damn near threw it off the mountain (who am I kidding it was 30 degrees). Ive slept in this bag in 17 degree weather and was perfectly warm, I even had to take my wool socks off.

Bag is good quality and warm, but bulky

  • Familiarity:I gave it as a gift but have feedback to share

This is a good, warm bag for the price. I bought it as a gift for a friend I went backpacking with . The bag was warm and comfortable, but we did notice it was bulky size wise on the trip.

Great bag just a little bulky

  • Familiarity:I've used it several times

I've used this bag twice now in January. One night temperatures dropped to 33 and the other was 37. Both times I stayed extremely warm. I have a slumberjack which is rated for 20 but it never kept me this warm. The only drawback of this bag is the size. It is on the bulky side but for the price, you won't go wrong.

Yes it's big, but it's so warm!

  • Familiarity:I've used it several times

This bag may be rather colossal but it is soooo comfortable. I run really really cold but in this bag I am nice and toasty. The size and weight are definitely worth it to me, but may not be worth it to you.

warm and bulky

  • Familiarity:I've used it once or twice and have initial impressions

I got this bag because it was a good price but it is bulky! I was warmer than my friends who had more compact bags which was nice but the bag took up most of my pack. It was so warm and snug! it was about 30 or lower and damp rainy nights and I slept great.

Great Bag, and Price!

    I've been using this sleeping bag for a couple of months now sleeping in a hammock and it has fit the bill wonderfully. The footbox is a little smaller than i anticipated but it's not a big deal. Its a great bag for a rainy weekend in the woods. I've slept in it down to 45 degrees partially zipped, but i believe even 60 would be do-able. I have no doubt that it will keep me warm down to Zero degrees. The zipper catches the inside if you dont hold it out of the way when you zip it up, but other than that i love it!

    so nice

      this bag is a little bulky but once you are in it you do not want to get out. Great bag for the price if you dont mind how big it is. I was also fine with out a sleeping pad because it so soft.

      With the Alps "cyclone" compression sack size L, I get my 0F Alps Crescent Lake down to about 9x16, but my bag is an XL wide... which is huge... so I'm sure the regular size would compress smaller.

      hey, is this bag rated 0 degrees Farenheit?

      Anyone know the dimensions for the Long vs Reg vs Wide?

      I'm going on a horse pack trip the end of...

      I'm going on a horse pack trip the end of June in Montana. The guide recommends a 0 degree bag. I'm thinking synthetic to save money. Is this or the Kelty a better choice?

      Best Answer

      I have this bag. I'm 5'9" and flux between 175/180lbs. But this bag is prefect. Plenty of room and super warm. If I lay on my side even my dog. A 60lb american pitbull can curl up and fit in lol. down side is even with a compression sack is big. need bigger ruck/backpack thats all I guess.

      The regular size is too short for me or my son - both around 6'. I'm heavier (220lb) and feel claustrophobic. My son is 180 and likes the width. We are giving the regular to my daughter and buying two larger sized bags. Also, the zipper is tempermental immediately and may be a problem.

      Does this bag have a full length zipper?

      Does this bag have a full length zipper?