Marmot Women's Trestles 15

Works great, stays warm, even when partially wet. Heavy and bulky for backcountry, which is enough inconvenience for the star deduction.

Synthetic, it's got the pros of warmth, even when it gets moisture. And let's be honest, warmth is more important when its below freezing, and worth carrying about 3 more lbs than most down bags that keep you as warm in the same temps.

But that's just it, if you can afford to carry less, then good for you—a down bag especially one of those new water resistant kind of down stuff is going to be your weightless dream come true for a long distance through hike. This bag is not quite that, but it's still pretty good.

This bag is not for the money bags, this is for those who don't want to spend $100s to spend the night in the woods. That being said, winter camping is the most expensive of all seasons because of what you need to stay comfortable. This is probably the best of the most affordable options out there for a backcountry hiker.

I recommend getting an alternative compression bag or figuring out a way to condense as best as possible for your trip in to basecamp. But hey, once you get there, you are so glad you have it. The fabric is high quality, it has a convenient stash pocket (especially for the solo campers for safety reasons), the filling is dense and pillowy. Zipper doesn't catch too much. It feels nice to take naps on top of, just as much as it is to sleep in.

Also I can unzip the lower half of it and let my legs slip out some if I get too toasty. Toasty is key here, I believe it holds up true to its temp when wearing proper PJs. It's spacious for a mummy bag, got no problems there. Its hooded part can pull around the face quite nicely and works not half bad for a pillow, or to just stuff some clothes behind your head.

The cons: bulky and heavy. Not a fan of how big it is to fit into a bag. I typically put my tent on the bottom of the outside of my bag, but I feel like this sleeping bag makes me have to reevaluate that choice.

The tradeoff is the luxurious comfort. Is it worth the bulk and weight to the hiker? I say read the weather. If it's rain, take the Marmot, if it's dry, stick with down. Wet conditions and affordable options in 15 degrees are what's going to truly determine the value of this bag to its buyer.

Great sleeping bag for comfort and warmth. Best mate-able mummy bag I've ever had! Lightweight but a little bulky. Great choice for backpackers with down allergies.

A really comfortable sleeping bag. My boyfriend and I needed to purchase new bags for summer and fall backpacking. We wanted bags that were mate-able, lightweight, and we couldn't get a bag with down fill due to an allergy I have. We also didn't want to break the bank.  

On its own or zipped with a mate the bag is warm, happily camp into late October in the Northeast in this bag, no drafts and can easily hunker down against the cold. The second zipper that goes about halfway down is wonderful when using as a mated bag, allows for ease getting in and out as well as more comtrol if it gets a bit warm and you need to unzip.

Plenty of room to move around in the bag in the shoulders and legs. We are a medium build couple at 5'4" and 5'6" and purchased a right and a left of the regular. I think some places sold as a women's bag.  

Bags are well made, zippers occasionally jam up, but not badly. They easily zip together, stay together and zip apart when need to. Have a nice little pocket on the inside of the bag for my glasses, the zipper pulls are glow-in-the-dark as well, which is pretty nice. When they get wet they stay warm and can dry out quickly.  

The compression sack that comes with the bag is pretty lousy, I purchased a four-point water resistant 20L compression sack for mine that gets it a little smaller.  I don't know of any down-free bags that compress smaller.  

Overall very happy!  

I live in New Zealand, and have used a Marmot Trestles 15 for the past 3 years. It's my first really good sleeping bag, so I don't have much to compare it to. 

It's been a really good bag, good for using inside the huts, where it's quite warm. But I usually prefer to sleep outside, using a bivvy bag. In freezing conditions, in Trestles 15 and bivvy bag, I am only warm enough if I have piles of clothes on as well, and then I have to huddle in a kind of foetal position. I am female, and a very cold sleeper. 

I like my Trestles bag,  it is very good quality but I am soon going to try a down bag.

Great bag. Good for 30 degrees.

Very good bag. NO more rolling up to pack it, just stuff it in a sack! Awesome. Generally it's good for about 30 degrees, but I am always cold. 

IF YOU ARE INTENDING ON CONNECTING THIS WITH ANOTHER MARMOT BAG LOOK AT THE LENGTHS!!!!! We bought a men's medium and a women's medium and when we went to zip them together the men's was 4-6 inches longer. We are still able to link them but there is overhang.