Cosmic Down 0

Warmth starts from the ground up. Starting with a good thermal pad. Not all pads are designed for cold temperatures and using the wrong pad is why many people get cold. -15 degree bag should work just fine. That means if you had nothing else but a sleeping bag it would keep you warm at -15 degrees. Adding a good thermal pad will keep you warm. When buying a sleeping bag you will need to consider your height. If you are using a long sleeping bag and you are 5’10” tall, all your heat is going to the empty space below your feet. Getting a bag that fits you perfectly will help keep you warm. I hunt all over the PNW for the past 35+ years. My fall sleeping bag is 15 degrees my winter or late hunt is -15 degrees. Combined with my thermal pad I have never woken up cold. I use a SlumberJack for my 15 degree bag and I use a Marmot. REI Marmot Trestles Elite Eco 0 Sleeping Bag $209 Kelty Cosmic Down 0 Sleeping Bag. Reg $294 on sale $219. I would suggest investing in a better quality thermal pad. Therm-a-Rest NeoLoft Sleeping Pad Or NEMO Tensor All-Season Ultralight Insulated Sleeping Pad **** Best ****

While it doesn't get much colder than 32F on the PNW coast, it's damn wet and windy. Last season I was suffering in my 20+ year old Sierra Designs \[synthetic fill\] so after long research I bought a Kelty Cosmic 0 Down sleeping bag for $165 \[before tax\]. It was on sale for Labor Day, but there are still end-of-summer deals out there. I'm just tent camping at parks, so weight was not an issue. I've always preferred down bags and as a retiree I need the extra warmth.

I also camp on the coast \[PNW\] where it's rarely colder than 35F but it's raw/damp/windy weather. I use a Kelty Cosmic 0 F Down Mummy sleeping bag. I've only had it for this season but it's a well - made quality sleeping bag and warm in these temps. I paid about $175.

The typical weather in coastal PNW this time of year is lows in the mid 40s and I used to bring a Sierra Designs 20F synthetic bag, but with humidity at 90% and Pacific winds, it isn't comfortable. A fleece liner and extra blankets didn't make a difference so I now just bring a Kelty Cosmic 0 degree down bag.

A Kelty Cosmic 0° is around $200. It’s the often mentioned low cost down bag. It will cut your weight in half.

My Kelty 0F that's not a mummy bag because I find those very annoying.

I have a Kelly 0F bag, 15F or so was still very cold and I had to stay bundled the whole time. 3 season North Face tent.

I have a Kelty Zero degree. It's ultra warm. Maybe too warm for 37-55 degree camping. It's heavy and you'll need a liner. The price was good. If I could afford it I would get a double down bag. Now I use an ikea comforter and considering buying another. Whatever you buy, be sure the zips are on the outside edges so you don't have to disturb each other. Also be sure the zippers are high quality and stay up. I have a cheapee chinese one and the zipps undo all the time.

My Kelty 0 bag, so I can wear shorts and t shirt and still be comfortable