Kelty - Cosmic Synthetic 20

I have the kelty cosmic down 20 and it it fantastic. Also about half the price of the ones you mentioned.

I second the Kelty Cosmic 20. Great lightweight down bag for the price!! I’m from SLC and camp/backpack in the Uintas constantly and it has never let me down and always been warm enough (even in a hammock)

I picked up a Kelty cosmic down a number of years ago. Fairly basic but it was down and a decent weight.

First - are you positive you want to zip together with your partner? I did your same plan \~15 years ago. Got 2 bags and zipped them together. It was cute. At first. Then we soon became cramped / cold. We almost always preferred to be in our own bags vs. zipped together. After the novelty of zipping together wore off - it really wasn't useful. Just saying... don't spend the extra money / effort or limit your options for this feature if you don't really need it. If you still want the zip together bags - you are looking for sleeping bags that have 'left' and 'right' zippers. Buy one left and one right. At 15F nights - you want a 5F or 0F rated sleeping bag. Or a 15F bag plus a liner for the colder nights. Are you sure you want a traditional mummy bag? I personally prefer down quilts. They pack smaller and are more comfortable than my mummy bag. They also work well when 2 people are together. Snuggle under the blankets, but then go into your own cocoon for the night time. **What is your budget?** It looks like Mountain Hardware does mens zippers on left and womens zippers on the right. * [https://www.rei.com/product/235362/mountain-hardwear-bishop-pass-15-sleeping-bag-womens](https://www.rei.com/product/235362/mountain-hardwear-bishop-pass-15-sleeping-bag-womens) * [https://www.rei.com/product/235363/mountain-hardwear-bishop-pass-15-sleeping-bag](https://www.rei.com/product/235363/mountain-hardwear-bishop-pass-15-sleeping-bag) Nemo does the same: * [https://www.rei.com/product/228439/nemo-disco-15-endless-promise-down-sleeping-bag-womens](https://www.rei.com/product/228439/nemo-disco-15-endless-promise-down-sleeping-bag-womens) * [https://www.rei.com/product/251886/nemo-disco-15-endless-promise-down-sleeping-bag-mens](https://www.rei.com/product/251886/nemo-disco-15-endless-promise-down-sleeping-bag-mens) This is a unique option too: * [https://www.rei.com/product/231206/sea-to-summit-ascent-15f-sleeping-bag](https://www.rei.com/product/231206/sea-to-summit-ascent-15f-sleeping-bag) The North Face Cat's Meow was the one I had with L/R zips. But it looks like they took that feature away. I was also going to recommend the Kelty Cosmic Down as a cheap/budget option - but they also look to only sell right zip bags.

Ouch, you are in a tough situation. You need a small sleeping bag, but have a low budget. Basically anything you buy is going to take up half your backpack. Your tent and sleeping pad will most definitely need to be strapped to the outside of your pack. 35L pack is really a limiting factor. Sure - the Nemo Disco is a fine sleeping bag. Better than the Forte for sure. The Kelty Cosmic is popular because it's cheap. If you can afford more, like the Nemo - go with that. I'd skip the 'zip together' feature. Don't limit yourself in that way. It sounds cute - but in practice joining 2 bags is not comfortable / warm. At least over the 18 years I've been with my GF. Hard to say more without knowing what brands you have a pro deal with and what temperatures you'll need to use the sleeping bag in (temp rating 15/20/30/40F?)

Can you add more specific details? You have this labeled as 'travel' - but ask about camping gear. I assume you are asking about the 'wilderness' type of backpacking - right? What is the low temps you plan to sleep in? You say no snow - but 'colder temps' - a number would help. What is your budget? Do you have $500 to spend? $5000? You say 'wreck bank account - but everyone's bank account is different size. How old are you? Man or Woman? (many packs and sleeping bags are gendered) Do you already have a good sleeping pad? This is also critical to a good / warm night sleep. Do you already have a tent? Sure - Kelty is a find budget getting started brand. They make an okay Cosmic down sleeping bag that's popular for wilderness backpacking. I wouldn't go for their backpacks really. Here are some default recommendations from Amazon: * [https://www.amazon.com/Kelty-Sleeping-Backpacking-Recycled-PFAS-free/dp/B0CSPFW5Q1](https://www.amazon.com/Kelty-Sleeping-Backpacking-Recycled-PFAS-free/dp/B0CSPFW5Q1) * [https://www.amazon.com/Osprey-Atmos-Backpacking-Backpack-X-Large/dp/B09JXQDZG5](https://www.amazon.com/Osprey-Atmos-Backpacking-Backpack-X-Large/dp/B09JXQDZG5) * [https://www.amazon.com/Therm-Rest-Original-Ultralight-Camping/dp/B00453NA1E](https://www.amazon.com/Therm-Rest-Original-Ultralight-Camping/dp/B00453NA1E) * [https://www.amazon.com/Therm-Rest-Ultralight-Backpacking-Sleeping/dp/B0CS4NHPVP](https://www.amazon.com/Therm-Rest-Ultralight-Backpacking-Sleeping/dp/B0CS4NHPVP)

My first budget backpacking sleeping bag was a Kelty Cosmic 20. It was way heavier than I expected. A friend let me use their Naturehike Sleeping bag (not sure on specific type) and it was way lighter and more compact. I still use the Kelty for car camping, but it no longer goes on backpacking trips with me. My next upgrade will be an ultralight quilt. I got a used Gossamer Gear pack 55L off eBay that I love! I started with a Naturehike CloudUp 2 tent which was fine for the price, I have since upgraded to a Tarptent Double Rainbow (also used on eBay). Depending on the distance and weather, I will still take the Naturehike tent sometimes even though it is heavier. I like that you can use it without the rain fly on a nice night and just have the mesh top so I can see the trees and stars. My first pad was a Klymit pad from Amazon for $40. It works fine for warm weather. I upgraded to an Exped Duo 3R last year since I now usually backpack with my daughter or girlfriend and a 2P pad seemed easier. I also have two Nemo Switchback pads that I will carry on some hikes. I put them under my pad in the tent to prevent any punctures in my Exped and to give a little more insulation on colder nights. They are also great to pull out and use as a pad around camp when we are lounging before going to bed. Unfortunately, UL gear and spending an arm and leg kinda go hand in hand. All of my inexpensive gear was great to get me started, but over the last few years, I have been replacing them with lower weight, higher quality, and hence more expensive options. Along with being heavier, the cheaper stuff is just, cheaper. The biggest thing I have noticed is the zippers don't glide as easy on my cheap gear. This can be a huge annoyance when trying to zip your tent or bag.

As others have said, 80 dollars is a pretty low budget. If you want lightweight and compact you’ll probably want down, but the best budget-friendly, three-season down bag I know of is still around 180 dollars new (Kelty Cosmic 20). You might check out REI Resupply for gently used gear to get the price down a bit. Unfortunately, down is just expensive and backpacking gear in general is expensive. :-(

Holy bageebus that's a 3lb sleeping bag. That is ludicrously heavy. Even the Kelty Cosmic 20 at $169 is 2lb 3oz. But beware the temperature ratings -- you want that 20F (+/-5F) to be closer to the "comfort" rating while the Kelty is rated at 20F but in fact has a "Lower Limit" of 21F. Get a down bag if you can. You don't need synthetic in the Sierra in summer. If I'm staying below about 10000' in elevation and it's July or August and the weather all looks very warm I *have* used a 30F but in general I use a 20F all summer long.

I love my Kelty Cosmic Down 20. It was budget friendly, especially for a down bag. It is a mummy style bag but is roomy enough. I am 5'11" and 230 lbs. I use an 11L compression sack for it while traveling. I have had it down into the high 30s and could have gone a little colder.

Then I'd say the new REI Radiant 20. It's a mostly down bag, but with synthetic in the footbox to accommodate sweat and if it gets wet in the night from rain (because most people stretch out and end up putting their feet against the tent wall which might have condensed). The Kelty Cosmic is a close second.

kelty cosmic down, featherstone, decathalon all make good bidget bags under 2kg