Riff Women's Endless Promise Down Sleeping Bag 30

I have the Nemo Riff 30, which is a little step up from the Disco with higher FP down so it's a little lighter and packs down a little smaller, but is otherwise very similar. The Riff/Disco are some of the only very lightweight backpacking bags that aren't mummy shaped. I think you'll like them. Also I personally went with the 30 since the vast majority of my camping is in the summer with warm weather. I'd die in a 15 degree bag on a 65 degree night. You can always add a sleeping bag liner on those rare nights where it's too chilly.

The Western Mountaineering bags look the best to me in terms of quality and specs, but I haven’t tried one. Have a Nemo Riff 30 which isn’t the lightest for its warmth rating, but it’s good quality down, I got a great deal on it and it’s roomy for side sleeping.

Fellow rotisserie here. I probably move in my sleep more than anyone on the planet. My ex said I do cricket jumps in my sleep. So I think there are kind of 2 philosophies. Either you get a quilt, which sort of naturally solves the issue by not restricting you, or you ironically get a mummy bag and perhaps being so restricted will inhibit you from moving as you normally would and sort of force you to chill out. It’s going to vary by person. Third option for people who have problems with quilt cold drafts due to their movement - wide bags. The problem with wide bags is they’re going to be harder to warm at a given weight or heavier to loft at a given warmth, they’re basically inefficient thermally. That said, Western Mountaineering makes some high quality ones like the TerraLite. I personally use a Nemo Riff. It’s what they call their Ultralight Spoon shape. Wider at elbows/knees than a mummy, but narrower than their Relaxed Spoon shape of like the Disco and cheaper models. I got really lucky on it for $200. Outside of a backpacking context or if weight doesn’t matter, just go with a rectangular bag.

So the Bantamweight is not a wide bag at all, it’s a mummy bag. I have a Nemo Riff that I really like, they call it a spoon shape iirc, wider at knees and shoulders for easier tossing and turning. I got mine at a really killer deal for $200. The Disco is an even wider cut that's a bit cheaper and uses lesser fill power down. Wider bags do sacrifice warmth:weight ratio, no getting around that. Have you considered quilts?

I just tried a quilt for the first time. My previous bag is a Nemo Riff 30, which I've used down to pretty close to 30F (And been miserable). I'd say that I'm comfortable in the Riff in the upper 30's. My new quilt is a 40F Enlightened Equipment Enigma (950 FP, 7d/7d fabric). When I took it out of the bag I was extremely leery of it. How is a bag I can see through going to keep me warm at night?!?! But I did a test hike on Saturday and slept in it and was very impressed. The low temp was 50F and I was quite comfortable. My feet got a bit chilly but I wasn't wearing socks. I used the same Tensor Insulated that I've had for a few years now. I'm absolutely a convert now. My quilt is about 21 oz lighter than my sleeping bag! I know that's a 30F bag vs a 40F quilt but there's still a huge difference if I had ordered the 30F quilt. And I'm completely confident in the comfort of the bag at a low of 10F higher than its rating, which is pretty much the same way I feel about bags.

I have a Riff 30, which is the lighter version of the Disco. It's crazy comfortable. You'll be perfectly fine (and super cozy) in a Disco 15 on a 25F night.

I am a relatively cold side sleeper and I just switched from a Nemo Riff 30 to an Enlightened Equipment Enigma. 40F 7d/7d reg/reg. My pad is a Tensor insulated but I’m giving furtive glances to the Tensor Elite right now. I use a Sea to Summit Aeros ultralight pillow. I just tried it for the first time last night. The low was 50F. In my Riff that would have meant opening the vents, leaving it mostly unzipped, sleeping in underwear, and probably still sweating. In the Enigma I slept in ZPack Octa camp pants and a 150 merino Smartwool long sleeve crew. Overall I was surprisingly warm. I had a beanie but never put it on. I might have been more comfortable with a thin pair of socks but otherwise it was pretty perfect. I didn’t take pad straps or attach the pillow to my pad in any way and I didn’t wish I could. ymmv there though. I’m totally sold. My quilt will be the go-to for anything down to ten over what it’s rated for. I might push that a few degrees lower with an alpha direct or Octa fleece shirt instead of the 150 merino. The big benefit is that it’s well over a pound lighter than the Riff and packs down to like 1/3 the volume. Easily worth it for the eight day I have coming up.

As you've already alluded to, there's a difference between sleeping bag comfort and survival ratings. The Nemo Riff 30F is limit rated to 29F but comfort rated to 39F, which means you'll likely get a bit cold but remain safe if temps drop into the mid 30s. Whereas the Riff 15F is comfort rated to 28F. If you expect temps to regularly drop into the mid 30s, I would go with the 15F version. You can always open the "gills" or unzip the bag on warm nights, or even use the bag more like a quilt.

As you've already alluded to, there's a difference between sleeping bag comfort and survival ratings. The Nemo Riff 30F is limit rated to 29F but comfort rated to 39F, which means you'll likely get a bit cold but remain safe if temps drop into the mid 30s. Whereas the Riff 15F is comfort rated to 28F. If you expect temps to regularly drop into the mid 30s, I would go with the 15F version. You can always open the "gills" or unzip the bag on warm nights, or even use the bag more like a quilt.

Cheap, warm, or light and packable - you can only have two, you’re never going to get all three. You’ll also be colder in a bag for two. The more air space in the bag, the harder it is for your body to warm all that space. So the colder it is, the less comfortable that will become. Mummy bags are designed to be conforming to your body for that reason. They are not meant to be zipped together. So a pair of rectangular bags will fit together but be bulkier and harder to be warm in. Nemo Forte, Disco and Riff bags will zip together and be warmer- but they will also not be cheap enough for you unless you get the heaviest versions. Synthetic also breaks down faster than down. They are a compromise between mummy and rectangular. Then there is the pad issue. Two single pads tied together will have a cold gap in the middle. A two person pad weighs a lot and takes up more space in a pack. Two rectangular pads will do better than two tapered pads, same trade offs. Everyone has a different equation for what is important. But it’s hard to sell the gear you no longer want unless it’s of sufficient quality to be desirable. Higher end sleeping gear includes Western Mountaineering, Feathered Friends and the top tier versions of Marmot bags. if your boyfriend is already backpacking, he has cheap stuff. You say that he doesn’t have good stuff. I highly recommend that you start with moderate quality gear like Marmot or REI brands and get separate bags because you don’t even know how much you will want to backpack. He already backpacks and will want lighter and warmer. Get couples gear when you are sure you will want to go often with him.

I bought one Riff for myself and ended up giving it to my son and I bought another one for me. I also got both of mine for around $200 each brand new. I really like the spoon shape.

You can def try on r/ULgeartrade. People are often selling there for reasonable prices and gently used. Quilts are better for low temps above freezing and excellent for warm nights because you can kick a leg out or let air in. I prefer the ones with a closed/sewn footbox for colder weather, but a drawstring is fine for warmer weather. I have a nemo riff 15F as well. The 30F custom quilt is rated for comfort, while I would say the Nemo is rated for survival and they felt about the same on 30F nights. Quilt is much lighter. I like a quilt that has a pad strap system that allows me to pull the quilt under my body and keep it there even if I turn. HG Burrow is around $300. Haven't used it, but I have a UGQ 30F long/wide and love it.