Women's Cosmic Down 20

Kelty Cosmic Down 20F is a great “budget” bag that has yet to let me down in the cold. It’s almost too warm.

Also have this Kelty bag and was pleased with its performance this spring. I do have the eco version of it as it was at sierra for a solid deal. With temps down in the low 40’s upper 30’s, I was warm with layers on.

Kelly cosmic down 20f, not under 80$ tho, if your short you can get the women’s one at backcountry for like 110$.

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

If its of any interest I have a kelty cosmic 20 thats only ever been used in my roof top tent. I can send it to ya if you pay shipping. If it works for ya you can use it for the hike or ill just sell it to ya cheap. Edit to add im in wnc in Waynesville

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. :-(