NEMO - Kayu 15 Down Mummy Sleeping Bag -9ºC Women's

Just got back from Algonquin where the temps dropped to 3 degrees C. I was comfy in my fairly new -9 degree C Nemo down bag wearing long base layers only, but I felt if it got below freezing I would need some additional layers. Other commenters are giving good advice when they say a good sleeping pad makes a big difference, especially if the ground is already cold (not just air temps dropping at night). Don't trust temp ratings of cheap bags and aim for something with a rating 15 degrees below the coldest you could expect it to possibly get.

Honestly I bought a Nemo Ramsey 15 a number of years ago and it was terrible, enough for me to avoid Nemo sleeping bags. Maybe it was just that model or something but I forever woke up looking like a chicken covered in tiny feathers and right from the get go it was clearly understuffed. It was much colder than a number of my friends 9-15 rated sleeping bags. I've since got a different bag that is rated to the same temperature after learning more about fill weight/power and it's clear that Nemo bag was a piece of junk. The kicker is Nemo seems like a great company and even sent me another one assuming the one I got was a lemon, and it was the exact same thing. I don't think I'd go back to Nemo for a sleeping bag

It’s all about a good sleep system. I have a 15 degree Nemo bag and an XTherm pad. Throw in a hot water bottle and I’m toasty all night. Just sleep in a base layer.

I can vouch for Nemo Equipment bags (I have 3 down ones and one synthetic for different temperature ranges). I can also vouch for Marmot down coats (for in-town use not for winter backpacking or camping) but I have never used a Marmot sleeping bag. My 3-season backpacking bag is a Nemo down 15F version that is probably 10 years old now and it is great except for in extreme heat and extreme cold at night. I have an old Eddie Bauer Flying Squirrel Sleeping Bag (modified with velcro) that I use for extreme heat and other Nemo down sleeping bags for winter backpacking. Nemo has a lifetime warranty on their equipment.

I love my down 15* Nemo bag. It's a huge warmth difference compared to my synthetic 25* Nemo.

Nemo down sleeping bag. My most expensive and by far my favorite sleeping bag.

Nemo down 15F is my favorite. I felt warm sleeping when outside was below 30F. Wait for the next sale in REI you can snag it for nice discount.

I vote for Nemo bags. I have 2 and love them. Perfect for side sleeping.

This. I hate mummy bags. I move too much in my sleep. My Nemo takes up a bit more space in my pack but it is so comfortable and a good night’s sleep, where I can fully roll around in my bag, is worth it. I will never go back to a mummy bag.

Nemo for sure

Spoon shape is great, arm zippers in the boost just seem drafty.

I really wanted to love the Nemo, but if OP is a smaller person, Id warn they have too much dead space.