Best Winter Down Sleeping Bags

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cold nights sleeping

The proper down bags to keep yourself warm outdoors and to sleep comfortably on long cold nights!



Choose which sleeping bag to use according to your sleep pattern, warmth level, and the conditions you will find yourself in.


Mountain Hardwear Phantom 0 Degree Down Sleeping Bag

With a snug mummy cut, this bag provides maximum warmth for minimum weight. It features the advanced water repellent technology Q.Shield that protects down fibers from moisture and retains their insulation properties in damp and cold conditions.

Zero degree bags come with extra bulk. Here the super light 15 denier fabric and touched stitching save on weight, so Phantom is lighter than most leading winter bags. 800-fill goose down provides puffy loft and luxurious insulation.

The Phantom is equipped with the best hood design. It remains comfortable when the hood and the neck baffle are fully cinched. The face gasket blocks drafts and the asymmetric neck baffle curves around the front of your neck, keeping warm air in, but not choking. The draft collar helps to seal out the cold air and you will not feel any heat loss from the bag. Two draw cords can snug down as needed to secure the collar.

The two-way zipper offers easy entry and exit. Fully zipped up, the bag feels like a big and fluffy cocoon. It fits your body perfectly and is extremely compressible. If you toss and turn at night and need a little more room, you will be able to wiggle around, to sleep on your side or stomach.

The Phantom is also loaded with convenient features like differentiated pull cords and two internal pockets.

Phantom 0 degree down sleeping bag is an efficient and durable sack, best for cold weather backpacking and climbing.

down bag


Phantom 0 specs and prices




Therm-a-Rest Altair 0 Degree Down Sleeping Bag

The Altair sleeping bag keeps efficient warmth even in -18° C temperature.

Its modified mummy design provides you with plenty of interior space around the shoulders and hips for balance of comfort and warmth.

Zoned Insulation

Fill is concentrated at the top and to the sides of your body, because the compressed down does not have the ability to retain warmth if you lie on it. On the underside heat loss is limited by your insulated sleeping pad. That way you get a consistent warmth with reduced weight and bulk. The wide shoulder girth is allowing an easy move around inside the bag, excellent for side-sleepers and winter backpackers.

This bag comes with SynergyLink mattress connectors. Two elastic straps are attached to the underside of your bag. They hold the bag onto the pad and prevent cold air from flowing between. This eliminates sliding, twisting and cold spots, while you still can roll and move freely. It can stretch to accommodate any mattress up to 25 inches wide.

Flat hood is easy to fold underneath the bag when you don’t use it, offering good insulation when needed. The inside of the hood has plenty of down baffles and provides lots of warmth if you are a back sleeper. The hood also allows side sleepers to exhale at night without drenching the side of the hood with moisture, with space enough above the draft collar and below the top of the hood if pulled down over the forehead. The hood does not cover your mouth if you lie on your side

Below the hood on the right hand side an adjustable cord pull lets you easily cinch the collar to retain warmth or to loosen it for venting.

The Altair has an adjustable draft collar over your back and shoulders, to prevent warm air from escaping when you move at night.

Triple stitched fabric along the zipper's inside prevents the liner from catching in the teeth, so no need of heavy zipper guard. The down-filled draft tube behind the zipper stops cold drafts.

Soft and comfortable feel of the feathers and fibres of down provide the best warmth-to-weight ratio despite advances in synthetic materials. The DWR finish to the 30D Nylon Ripstop face fabric of the bag prevents down insulation from getting wet.

altair down bagAltair is lightweight, compressible, and warm enough to perform in the mountains all year long!

Specs and prices


Compare with Kelty Synthetic Sleeping Bags!