Fantastic down bag. It both kept me warm in very cold temperatures, and was not overly hot on a more mild night. Compared to some competitor bags, Marmot bags have slightly more wiggle room considering the similar weights. I consider this the ideal 15 degree bag compared to the Sawtooth and the Helium - the EN 13537 rating is 6 degrees better for this bag than the Helium, and this bag packs pretty tight and light also.

I've used multiple Marmot bags. This will be my all purpose bag moving forward. I wanted something that would be warm enough for Winter camping but flexible and light enough to use in the Summer. This is a fairly pricey unit however it's absolutely worth the price if you are looking for a bag that gives maximum flexibility. This bag is extremely roomy....by far the most comfortable bag I've ever slept in. The full zip is worth the extra weight and space (for me anyway). I tend to sleep very warm and found this bag perfectly comfortable in warmer conditions.

This is an awsome down bag. It is very warm and not too cramped inside. I do tend to be a cold sleeper, but I have slept comfertably into the lower twenties with only a light base layer. I have found this bag to be too warm for milder nights, and have had problems with sweat collecting in the bag even with the side zip opened for ventilation. I find it to be more of an pain than a problem, and the bag even when mildly damp has always kept me warm. I have found that as long as the night time temps are below 35 degrees I am fine, but any warmer than that and this is just more bag than I will need. Marmot sleeping bags are very well built, and you won't be disappointed in the craftsmanship. I have not had any problems with loosing down, nor have I noticed any loss in loft. I would recomend this bag to anyone for a fall/spring bag, and for winter in mild climates.

I've spent probably 30 nights in this bag now, and don't have a single complaint. Super warm and cozy, even right down around the rated temp (this isn't one of those "15 degree" bags that leave you shivering right below freezing). Full length zipper is great feature (a must, I would say) so you can vent the foot box easily (and you will have to, this is a WARM bag). Nice hood and adjustment cords, although I do have trouble sometimes cinching them down in the dark without a headlamp (but I seem to have problems with that in any bag... maybe I'm just slow). Fairly water resistant shell, although it will wet through against a wet tent wall eventually. Packs down nice and small and is feather light for such a warm bag. Great mild winter / shoulder season bag.

This bag is ridiculous! I have never been so warm. I have terrible circulation and freeze in a tent, my feet are always cold and my body is cold too, my boyfriend told me to get a down bag. This bag changed my camping experiences. It is so down filled I can sleep on my side comfortable in the tent and I was so warm I had to strip down. I am so happy with my purchase of the Marmot Pinnacle, it's worth every penny! On our trip the air temperature was a little below freezing and I had just underwear on, so I'm imagining on a colder night I'd be fine in just a light baselayer for sleeping. Great bag, recommend it.

Used this bag on a backpacking trip into the White Mountains of Alaska. Have to say it is great, keeps you extremely warm, is lightweight, and definitely a great purchase.

This is a very warm bag. I have slept in 20 degrees F without any problems. The bag is very lofty and comfortable.I noticed it has been losing some feathers, but nothing too abnormal. I am 6'3" and a long is perfect. This is a good all around bag.

Well, it kept me warm through pretty much every type of weather while hiking the AT for a month so I feel I owe this little guy at least four stars. It's a bit clammy to sleep in (but I suppose all bags are??), but it makes up for it by keeping you warm and dry. If it gets a bit damp from rubbing against a tent wall or being dusted with rain while in a shelter, it dries quickly. Luckily I never got it very wet, so I am not sure how it responds to that. I am generally a very cold person when I sleep, but this one kept me warm so I recommend it to anyone who is generally cold while sleeping. My coldest night in it was about 20 degrees with a wind chill probbaly in the lower teens...and even then, it was great.

a great bag, light and compressible. i can't deal with super tight bags and this one has just enough space for me to be comfortable. Don't expect to toss and turn too easily though. Temperature wise... so far I slept in conditions from about 30 to 40 degrees, basically just opening up the zipper more or less to let warmth escape works very well.
everything is very well made ... the best bag i owned so far.