The lowest temperature on my camping trip was 11 C, or 51.8 F, which is 36 degrees higher than what this bag claims, but I thought it would be helpful to post this review anyway. I am an inexperienced camper, 30 years old, 144 pounds, 5’5”, medium-sized. This was my first sleeping bag purchase and I spent a lot of time researching different bags. I tend to get cold very easily so I was intent on finding a bag that would keep me warm. This bag definitely kept me warm in the conditions I slept in. It was toasty, hot, and very nice. I felt the temperature contrast with the outside as soon as I unzipped my bag and it was stark. I slept in a tent on an air mattress with one layer of light clothing and thick socks. My feet were cold without socks at 11 C, so that is something to keep in mind. As far as comfort, it was great. I did have to get used to the mummy style, but I found the bag moved really easily with me as tossed and turned. I got used to it by the second day.

Size note: I purchased the 6-ft bag and found that was the perfect size for me. There was extra space in the hood area, but I think it would have been too tight/small for me had I gone with the 5’6” option.

I was dedicated to Swiss backpacks for years. However, I needed to upgrade and I saw this and recently took it on a two-week trip. IT WAS PERFECT! The bag was perfectly designed for a woman, especially me! I am 5'5" and the bag was the ideal fit (any taller and I think the regular would be too small). I am often cold at night, but not in this bag! It was comfortable and perfect, and really light!
I recommend this bag to anyone who is looking for something on the warmer side, cute, well-made, small and light.

Bought this bag for a mid May camping trip to Mesa Verde, CO. I was really worried being cold at night but decided that 0degrees was a bit much for someone who didn't expect to camp below 30 degrees. I'm VERY happy with this purchase. When the weather dropped I was warm and snug in my little mummy bag. In the morning when the sun came out i just unzipped a little to cool off. The bag is very comfy too and not too snug which was another concern. I'm 5'5'' and it was my perfect size. It's a great purchase and it's cute too.

I need to get a liner for this because I'm sensitive to cold but that's just me. Excellent value. Good quality. I got regular size. I'm 5'5" and it feels perfect.

I'm writing this on behalf of the wife... she has been very happy with this bag thus far. We have been hit by some very cold nights recently, and she has been nice and cozy in the Marmot Trestles 15. The bag is very well constructed with solid seams, tough zippers, and good fabrics. I highly recommend this bag for 3 season use, you won't be disappointed.