NEMO - Riff

That’s what I was going to say. I have a Nemo Riff 15 that is a good fit for me but it may be too warm for OPs needs

As a side sleeper who turns like rotisserie chicken I would highly recommend quilts. If you still want bag then maybe Nemo riff 15 could work. Quilt is around 1/2 to 2/3 the weight and way more room to turn and toss and no hood helps you with side sleeping. You can get -2 Celsius comfort quilt under 300€ from liteway: https://liteway.equipment/quilts/simple-quilt-870-fp-10d It's Ukrainian company. Edit: there are also sleeping bags made for side sleepers like this: https://www.amazon.de/-/en/Big-Agnes-Sidewinder-Sleeping-Bag/dp/B0C5D7V47C

Love my Nemo bags and always recommend them. Great product, great customer service and repair, and good price. And they make bags that are specifically cut to minimize dead space but accommodate side sleeping. https://www.rei.com/product/228442/nemo-riff-15-endless-promise-down-sleeping-bag-mens A few other things to keep in mind: - A great bag is useless without a pad. Make sure you factor that into your investment if you haven’t already. - A 20 degree bag might keep you safe in 20 degree weather, but you won’t be happy about it. I want a 0 degree bag if camping in anything below freezing. (But I am a small-ish woman who runs cold.)

Nemo Riff 15 might be a shout. I use a sea to summit reactor liner with it and I'm roasting. I've had that at -10 without the need to layer clothing inside

Correct. Disco and Riff both come in 30*F and 15*F. But the riff uses 800fp down and the disco uses 650fp down so the riff is their ‘ultralight’ version it’s a bit narrower and lighter weight.

Disco is a 30 degree bag, the riff is a 15 degree version. I am 6'2" 250lbs and I have both in long and they are amazing.

Depending on your specific needs for temps, weight, and filling I'd recommend, Nemo's Rift, Forte, or Tempo bags. They have a "spoon" shape (extra space around knees and elbows and tapers around the waist and feet) rather than mummy shape. They're designed to feel less restrictive and I've found them to be so. Of course the bag will take up a bit more space than a mummy bag, but it's better than a regular rectangle bag. I have the Tempo and I think it's good for regular backpackers and I really like it. They're common at REI too so you may be able to try it out.

For clarity - The Riff (and Disco) are down. While the Forte and Tempo are synthetic. Their spoon/peanut shape is definitely very popular with side sleepers, or people who sleep angular or toss and turn. Much more forgiving than a regular mummy, without the draft issues of a quilt. Recommend people getting into quilts, to buy a wide one. This will help mitigate drafts. You mention REI, all of their sleeping bags now come in "wide" versions. Still a mummy for the most part, but about 5" wider than a regular mummy. Their Magma is an excellent bag, as is their Magma quilt, but it's only rated to 30 degrees.

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

Nemo for sure

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

Nemo sleeping bag with REI 2.5 self inflating sleeping pad works for me.

Never tried a quilt, but as a fellow side sleeper I LOVE my Nemo sleeping bag. Can't believe I ever tried to use a mummy bag.

Love my Nemo down bag. Love.

Budget is a factor, as well as intended use (backpacking vs ultralight speed hiking) Down will be lighter (and more expensive) than synthetic fill I have a Nemo bag and a few different thermarest pads depending on the season I also have a couple Big Agnes (they are great for bigger people) bags, but they do not have any fill on the bottom, instead they rely on the sleeping pad. There's a whole interesting theory about this design if you care to research it! You can talk to the folks at Hiker Direct and they are big supporters of scouting. We've got folks that have really good luck with Nemo, Kelty, Hyke and Byke (online sales only), and some others, too. GearLabs reviews is pretty thorough if you want to really dive into the numbers and test process before you buy.

Nemo bags are extra roomy yet pack down tiny. Love mine wouldn’t use anything else

We use nemo sleeping bags. They have male/female mummy bags with zippers on opposite sides. They can be used solo or in tandem. Other commenters are right, when cold it’s much more cozy to use them solo without the gap between shoulders

Nemo sleeping bags are designed to zip together, highly recommend. I like having the option to conjoin if it’s cold out, but sometimes like to unzip in the middle of the night and have my own space

I had the same problem. Bought a Nemo something which had a wide center. It helped but I still couldn’t sleep. I switched to a quilt that strapped around a pad (enlightened equipment I think) and it is an absolute game changer. Super roomy and very warm. I mean I still don’t sleep but it is no longer because of the sleeping bag.

I have a Nemo bag and pad and have been quite happy with them both. Particularly if you're a side sleeper or otherwise restless, the Nemo spoon-shaped bags are great. They're not the lightest but they're light enough if you need that comfort. I suggest adding the Big Agnes Rapide to your list of potential pads.

I agree that quilts are probably one of the strongest directions here. If you can stand sleeping bags then lots of Nemo bags have a spoon shape that really lets your shift your legs around which as a side sleeper I really liked.

Go to REI, invest your money on a good Nemo brand sleeping bag. You’ll be thankful for many many years and if anything happens to it you can return exchange at REI for years. If you haven’t already sign up for a REI co op membership and get your % back on your purchase.

My order of preference, without prying more info out of you would be: 1. Magma 2. Radiant 3. Nemo … anyone giving you numbers after the name of the bag is guessing because you never mentioned what temperature rating you need and what geography we are talking about. In terms of r-rating we would need to know what mattress pad you are shlepping too…