Fill: 850 +
Temperature Rating: 40 degree
Weight: 1 lbs 4 oz
Price Paid: $150
So far as I am concerned Marmot is the Technical gear leader these days. Before I would have told you this was The North Face, but everything Marmot builds or creates is just better. This bag is no different.
I have been using the Marmot Helium bag but wanted a summer bag as well. I thought long and hard about getting a down summer bag. The Helium I use in below freezing temps, so not too much to worry about with water soaking the down. The Atom will be used in rain storms so you better have a good tent that’s going to stay dry if you use this bag.
This bag is everything as advertised. It's as roomy as the Helium (I'm 6’1" and 240 lbs) and I am very comfortable in the long version Atom. This thing packs down to nothingness so much so I have been able to downsize my backpack. The room that is normally reserved for sleeping bags of the past is now used for other stuff. As a result I just don’t need as much room. Temperature rating is again understated if anything. A pair of long johns, a cap, and I think I'd be happy down to 25 degress.
The reason that this bag is better then the Helium is because Marmot somehow found a way to drop the price of the bag compared to in the past. The reason it's worse is for some reason Marmot can no longer guarantee 900 fill down.
Temperature Rating: 40
Weight: 1lb 3 oz
Price Paid: $150
Great all around bag! Like the other reviewers, I took my Atom down to the mid 30's and was very comfortable. Weighs nothing and extremely comfortable; plenty of room. I'm extremely impressed with this bag, I might just go buy a Helium for those colder nights.
Fill: 850 fill down
Temperature Rating: 40 degree farenheight
Weight: 16 ounces
Price Paid: $189
This bag is as promised. I slept comfortable in temps in the mid to lower 30's. This bag also packs down to next to nothing, don't use the stuff sack that comes with it because it's too big, you can go much smaller.
Where to Buy
Here's what other sites are saying:
Marmot's Atom sleeping bag is an ultra-light design and has the highest quality down makes it a great bag for warm-weather summer road trips to extreme climbs.
The Marmot Atom 40-Degree Down Sleeping Bag relies on high-loft, premium-quality 850-fill goose down for its incredible warmth-to-weight ratio. An ultralight ripstop shell holds the insulation in place without adding much weight or bulk for easier compressibility. Take the Atom along on your next summer backpacking trip--it's so compact and lightweight, you'll have no trouble finding space for it in your pack.
Free Shipping. Marmot Men's Atom 40F Sleeping Bag DECENT FEATURES of the Marmot Men's Atom 40F Sleeping Bag Filled and Finished in Santa Rosa, California Certified 850+ Fill Power Goose Down EN Tested Pertex Microlight Shell and Lining Fabric Sewn-Through Baffles Nautilus 6-Baffle Hood Classic Trapezoidal Foot Box Hood Draw Cord Full Length Zipper Insulated Draft Tube Stretch Tricot Baffles at Hood and Foot Box Velcro-free Face Muff Zipper Garage Stuff and Storage Sack Included Zipper Guards The SPECS of the Marmot Men's Atom 40F Sleeping Bag Temperature Rating: 40deg F / 4deg C EN Tested Comfort: 50.5deg F / 10.3deg C EN Tested Lower Limit: 43.2deg F / 6.2deg C EN Tested Extreme: 18.7deg F / -7.4deg C Zip Option: Left Zip Fill: 850+ Fill Power Goose Down Insulation: 850+ Fill Power Goose Down Lining: 20 Denier 100% Recycled Polyester Mini Ripstop DWR 1.0 oz/yd 20 Denier 100% Nylon Mini Ripstop DWR 1.1 oz/yd The SPECS for Regular Weight: 1 lb 5.52 oz / 610 g Length: 6'0in. The SPECS for Long Weight: 1 lb 8 oz / 680 g
The Atom's ultra-light design and our highest quality down have given it cult status among alpinists as a bivvy bag on extreme climbs, but its comfortable, silky fabric make it a great bag for warm-weather bivvies on casual summer road trips as well. Marmot Atom Features: Certified 850+ Fill Goose Down The Best Weight to Warmth Down in the Market; Independently Tested and Certified by International Down and Feather Laboratory in Salt Lake City, Utah. Retested at Fill Time in Santa Rosa to Ensure 850+ Fill Power Every Time. If the Down Does Not Meet Our In-House Test, We Send It Back Classic Trapezoidal Foot Box For More Foot Room Full-length Zipper Hood Draw Cord Positioned for Easy Access Insulated Draft Tube Eliminates Cold Leaks Through the Zipper Sewn-Through Baffles Makes the Overall Weight Lighter Stuff and Storage Sack Included Store and Pack Just Like Your Sleeping Bag Velcro--free Face Muff Keeps the Drawcord and Zipper Away from Your Face Zipper Guards Help Repel Biting Zipper Coils SpecsWeight: 1 lb 5 ozs / 595 g Main Material: LightForce N-120R DWR Lining Material: LightForce P-100 DWR Taffeta Insulation Material: 850+ Goose Down Size for stature: 183 cm Size on shoulder: 157 cm Size on hip: 147 cm Size on foot: 102 cm 850 Down Fill Certified 850+ Fill Goose Down bags are constructed with the following features: Nautilus Hood: the same construction as our 8000m jacket hood, a 3D hood that wraps around your head and reduces heat loss. Hood Muff: creates a warm down gasket around your face, keeping the drawcord away from the face. Stretch Tricot Baffles: allow the bag to be stuffed and unstuffed without tearing the baffle material. Trapezoid Foot box: matches the shape of your feet, wider in the toe area and narrower in the heels. Down Fill Oversized Draft Tube: eliminates cold spots Zipper guard: keeps the draft tube fabric from getting caught in the zipper Ground Level Seams: top layer wraps fully around the body creating a warm layer of down. EN Tested Facts don't lie! Marmot began as a sleeping bag company and we continue to pioneer performance, value and insulation standards in the outdoor industry. All Marmot sleeping bags are EN tested to ensure quality and performance. During the development process, we send all samples to the Thelma Testing Center in Norway. We continually use the Thelma Center to achieve continuity in our results. EN 13537 is a European standard designed to standardize the temperature ratings on sleeping bags manufactured and/or sold in Europe. It went into effect on January 1, 2005. There are three main temperatures that are measured, Comfort, Lower Limit or Transition, and the Extreme/Risk range. Comfort Range indicates the average person will feel comfortable at all times. Transition Range indicates an experienced person can adapt to the cold conditions by wearing more appropriate clothing. Different values for men and women are the norm. Extreme/Risk Range indicates a strong sensation of cold has to be expected, there is a risk of health damage by hypothermia. An experienced person can adapt to the cold conditions by wearing more appropriate clothing.
- Mountain Hideaway