3-Season Down Sleeping Bags

Recent 3-Season Down Sleeping Bag Reviews

Marmot Helium 15

Wide temperature range. Light. Warm. Roomy. I own several Marmot sleeping bags from the lightweight Hydrogen to the extreme conditions Cwm. The Helium is my all around favorite, the one bag I would own if I could only own one and the one I reach for most often. In my experience, high quality down has a much larger temperature range than synthetics. The Helium has a design feature that maximizes this versatility that you will either love or hate. Most sleeping bags have a side baffle to prevent the… Full review

Mountain Equipment Glacier 700

Great overall materials for the price, but a few major flaws. I would love to love this bag. I searched for a long time and for its price class (<300 euro), it has one of the best specs/weight ratio. It is warm (rated for 5°F, -15°C ), very lofty (700 cu in down,  >=90% down), has a water-repellent outer material, the down distributes well and stays in place in the baffles. However there are a few problems for this bag that made me return it after testing at around -1°C (~30°F). I am… Full review

Sierra Designs Nitro Quilt 800 / 20 Degree

I bought one based on reviews. I had some issues but the company stepped up and fixed the issue. I am very happy with the new one. I bought one based on the reviews. I really like the design.  I had a minor issue on delivery. I contacted the company and their response was slow but they took care of me. They gave me a return number and offered to replace it. The new one is perfect. Full review

REI Igneo 25

I’ve gotten through some very cold nights at higher altitudes by wearing cold weather gear and a bag liner inside my Igneo 25 long. Good value and quality with some very nice design features for the price. The light weight and compressibility is outstanding. After two years it is still my “go to” when heading out with a backpack. Thumbs up! Full review

Western Mountaineering SummerLite

Used this for a month in the woods for military training exercises. It's great for sleeping outdoors even if you don't have a cushion or sleeping pad. I got one for a military training exercise since the army ones aren't as comfortable. I didn't mind the price for comfort, however, it doesn't do well in wet conditions. Moisture still seeks in and gets a weird smell. If you're not going to be in a wet area, it's perfect. The Summerlite rips TOO easily, I found a gap on the back after sleeping on… Full review

Big Agnes Lost Ranger 15°

Great bag and a great price, but not a 15 degree bag for us! (Roxy Ann included) Temperature ratings are very personal and depend a lot on how much a heat a person produces and puts off generally; also what state of rest a person is in when they use the sleeping bag, and how much they've had to eat can play a role in sleeping comfort when you are required to make your own heat. I have used this bag and its accomplice the Roxy Ann (my gf has) for over two years and probably 50+ nights (100 nights… Full review

Big Agnes Torchlight UL 20

The Torchlight UL 20 is a fantastically cozy and versatile backpacking mummy bag. Super spacious when you want, but snug when you want that, with customizable zipper options. The ultralight 850 fill power Down-Tek makes it a great choice for ounce-counting backpackers. I have been using a Mont-Bell UL SS Down Hugger #4 sleeping bag for about ten years. It has served me well, being very lightweight (1.5 lbs), and warm enough most of the time (rated 34°). It also has stretchy elastic baffle stitching,… Full review

Outdoor Vitals StormLoft 30-Degree Down TopQuilt

The 30 Degree Down TopQuilt is one of the most affordable, lightweight and reliable sleeping bag options on the market. Weighing just 18 ounces, it's built like a workhorse but performs in an elegant way. If you’re looking for an affordable-yet-reliable quilt for backpacking, look no further. Outdoor Vitals’ 30 Degree Down TopQuilt is unmatched in its efficiency. The 800fp quilt is compressible beyond relief, warm when it counts and it still costs a fraction of competitive products.  The 30… Full review

Big Agnes Diamond Park 15

Big Agnes calls the Diamond Park 15 a sleeping bag, but it really isn't, except for sometimes when it is. It is more of a flexible sleep component system that converts from a back country bed style unit into a full featured, standalone quilt or even a mummy style bag with the optional Park Bag Wedgie Expander. Great for those who want flexibility without having to purchase a quiver of bags and quilts. The Big Agnes Diamond Park 15 uses 600 fill DownTek for insulation and converts from bed, to quilt,… Full review