Alsek 22°F

41

$415.00

Size

5'6"

6'

6'6"

Wide 6'

Wide 6'6"

Fill

900fp HyperDRY Goose Down sold out

850fp HyperDRY Duck Down sold out

900 Fill Power Goose Down sold out

Qty

Lightweight, warm and compact, the Alsek is a versatile quilt that ensures comfort in the warmer months, as well as the assurance of a good night's sleep well into the shoulder seasons.

Overfill is available to add to this item.

INCLUDED

Free Shipping in the United States
Silnylon Stuff Sack
Organic Cotton Storage Sack
2mm Cords for attaching to your pad (comes with extra cord)
Webbing straps

Video
Features
Specs
Materials
Design

Patented Pad Attachment System - Widely considered the best design on the market for preventing drafts. Offers unmatched versatility, comfort and efficiency in a quilt style sleeping bag. For more information view our Product Manual.

Can Be Used Without a Sleeping Pad - Comes with removable webbing straps to be used without attaching to a sleeping pad. For more information view our Product Manual.

Elastic Binding Around Bottom Opening - Elastic binding around the bottom opening prevents gaps and drafts at the sleeping pad.

Differential Cut - A critical factor in quilt style bags with adjustable girth, differential cut allows for maximum loft from our premium down.

Continuous Baffles - With continuous baffles the down can be manually moved as temperatures dictate for maximum versatility.

Down Filled Collar - Our overstuffed collar fits comfortably against your neck to seal this critical area from drafts.

Trapezoidal Foot Box - We have shaped our foot box for the greatest comfort, warmth and efficiency.

Overstuffed Baffles over the Foot Section - Provides extra insulation over your feet to ensure toasty toes.

Overfill Available: For more information or to order overfill click here.

Shell imported. Designed, filled, finished and stringently inspected in Colorado.

Included
Free Shipping in the United States
Silnylon Stuff Sack
Organic Cotton Storage Sack
2mm Cords for attaching to your pad (comes with extra pair of cord)

Specs	Small		Regular		Long		Regular Wide		Long Wide
Fits To	5'6"		6'		6'6"		6'		6'6"
Fill Weight (ounces)	850fp	900fp	850fp	900fp	850fp	900fp	850fp	900fp	850fp	900fp
	13.5	12.6	14.4	13.4	15.4	14.3	16.3	15.2	17.4	16.2
Total Weight (ounces)	21.5	20.6	22.9	21.9	24.2	23.1	25.5	24.4	27.3	26.1
Loft Single Side	2.75"		2.75"		2.75"		2.75"		2.75"
Shoulder Width	52 inches (Similar to 61" mummy bag)		52 inches (Similar to 61" mummy bag)		52 inches (Similar to 61" mummy bag)		58 inches (Similar to 67" mummy bag)		58 inches (Similar to 67" mummy bag)
Hip Width	42 inches		42 inches		42 inches		48 inches		48 inches
Foot Girth	38 inches		38 inches		38 inches		43 inches		43 inches
Footbox Length	21 inches		25 inches		28 inches		25 inches		28 inches
Packed Size	6.5 X 11.5 inches 6.5 Liters		6.5 X 11.5 inches 6.5 Liters		6.5 X 11.5 inches 6.5 Liters		7 X 12 inches 8 Liters		7 X 12 inches 8 Liters

Due to variances in raw materials, finished weight my vary by +/- 5%

◄Metric Specs

Specs	Small		Regular		Long		Regular Wide		Long Wide
Fits To	167.5cm		183cm		198cm		183cm		198cm
Fill Weight (grams)	850fp	900fp	850fp	900fp	850fp	900fp	850fp	900fp	850fp	900fp
	383	357	408	380	437	405	462	431	493	459
Total Weight (grams)	610	584	649	621	686	655	723	692	774	740
Loft Single Side	7cm		7cm		7cm		7cm		7cm
Shoulder Width	132cm (Similar to 155cm mummy bag)		132cm (Similar to 155cm mummy bag)		132cm (Similar to 155cm mummy bag)		147cm (Similar to 170cm mummy bag)		147cm (Similar to 170cm mummy bag)
Hip Width	107cm		107cm		107cm		122cm		122cm
Foot Girth	97cm		97cm		97cm		109cm		109cm
Footbox Length	53cm		64cm		71cm		64cm		71cm
Packed Size	16.5cm X 29.2cm 6.5 Liters		16.5cm X 29.2cm 6.5 Liters		16.5cm X 29.2cm 6.5 Liters		17.8cm X 30.5cm 8 Liters		17.8cm X 30.5cm 8 Liters

Responsibly Sourced Down
Like many of our customers, we at Katabatic Gear are concerned with the environmental and animal welfare impact of our products. We are dedicated to a responsibly sourced, and very high quality product, just like our down supplier, Allied Feather and Down. They are certified through both the bluesign®and Responsible Down Standard®programs. Another reason we partner with Allied: we can offer our customers access to the Track My Down program. It allows our customers to learn everything there is to know about the down in their specific quilt. For more information, please follow these links to Allied’s Pledge, FAQ’s, and Track My Down pages.
900 Fill Power Goose Down
We use the highest quality 900 Fill Power goose down, offering the most loft and warmth for the least weight. Goose down has many advantages over synthetic insulations. In warm temperatures goose down allows heat to pass through, giving it a wider comfort range than synthetic insulation. The down can be intentionally moved around in its baffles, allowing you to adjust the amount of insulation based on conditions. Finally, synthetic insulation breaks down more quickly with use, losing loft and warmth. As a result a down filled product has a life span many times that of a synthetic filled product, making down a much better value. Our 900 Fill Power premium goose down is produced for us here in the U.S. by Allied Feather, and is available untreated or with HyperDRY™ water-resistant treatment.
850 Fill Power Duck Down
With all the benefits of down vs. synthetic, duck down is often cheaper than goose down, only due to the fact that it is more widely available. For years it was difficult to obtain duck down in a fill power greater than 700, which meant a heavier sleeping bag. Now that we can get responsibly sourced, high quality, 850 f.p. duck down, we are happy to be able to offer it to our customers. There are no quality, performance, or longevity sacrifices in buying a duck vs. goose product. One potential downside is that the natural animal odor that can be present in down products is more common to duck down than goose. This does not mean your duck down will necessarily have an odor, or that goose down will not. It varies from one lot of down to the next, and we’re told it is due to the birds’ diet. Some folks don’t notice any odor, while those more scent sensitive might, particularly if the bag is damp. As one customer put it, “Who cares! In a week or two it’s going to smell like MY odor.” Our 850 Fill Power premium duck down is also produced for us here in the U.S. by Allied Feather, and is offered with HyperDRY™ water-resistant treatment.
HyperDRY™ Water-Resistant Down
We are pleased to offer HyperDRY™ hydrophobic down. This down has been treated to provide additional resistance to unwanted moisture. In conjunction with our highly water-resistant shell materials, HyperDRY™ provides extra peace of mind, and dries faster than untreated down if it does get wet. Is this a miracle water-proofing that will allow you to sleep out in the rain or dunk your bag in water with wild abandon? No. Will it give you extra protection and help maintain loft in damp conditions? Absolutely! Our water-resistant down is bluesign® approved, so you can rest assured that it is safe for the environment and human health. Produced for us here in the U.S. by Allied Feather. Available in 900fp goose down and 850fp duck down.
Pertex Quantum Y Fuse Eco Riptstop (.85 oz/yd)
The best fabric you’ll find for the shell of an ultralight sleeping bag.
1. Keeps your insulation drier: Best DWR we’ve tested
2. Keeps your insulation loftier: Lightweight, soft, breathable, and downproof
3. Keeps your quilt out of the landfill: Pertex Y Fuse technology extends the longevity of this already durable UL fabric, and also improves its highly downproof and water beading properties
4. Reduces demand for raw materials: Eco version of Pertex Quantum is made from recycled yarns and maintains the fabric’s advanced performance qualities
Pertex Quantum Tafeta (1.0 oz/yd)
The softest fabric you’ll find for the liner of an ultralight sleeping bag. This Pertex Quantum plain weave makes for a silky soft liner fabric on the inside of our quilts. We get tons of customer feedback stating that it’s the most comfortable sleeping bag fabric to ever brush up against them – not as clammy or crinkly as other fabrics.
Quilt Style Sleeping Bag
The idea behind a quilt style sleeping bag is to eliminate the insulation from the bottom of a conventional sleeping bag. Why? Insulation must have loft and trap air in order to be effective. Since any insulation beneath your body gets crushed, it is wasted. So why not leave the insulation (and the fabric and all that weight) out of the bottom of the bag? This is what a quilt style sleeping bag does, but it goes one step further.

When a quilt style sleeping bag is designed well, versatility is significantly increased. Our patented pad attachment system and elasticized edging keep your body heat in and the cold drafts out. When conditions are warm, lay the quilt over you like a blanket and allow some ventilation. There are numerous variations in between, making our quilts comfortable in a much wider range of temperatures than a traditional sleeping bag. Another huge benefit of a well designed quilt: you can toss and turn and roll around without getting tangled up or rolling off your pad!

Attachment System
The backbone of our down quilt style sleeping bags is our patented Cord Clip attachment system. The beauty of this design is its simplicity. All our bags feature our Cord Clips, and come with 2mm cord for attaching the sleeping bag to the pad. Simply cinch the cords around the pad, and attach your bag! This system works easily with most sleeping pads.

Our Cord Clips feature two attachment options for maximum versatility. The first attachment position allows the clip to slide freely on the cord. For warm weather this gives you the most freedom of movement. As the temperature drops, clipping into the second position allows you to lock the bag in place on the cord. In this position you can control the girth of the bag, and are able to set the bag to overlap your pad to lock out drafts. Even with the Cord Clip in this position, adjustment along the cord is easily accomplished by lifting the Cord Clip vertically. With the Cord Clip held vertically it slides easily along the cord. Returning the clip to its horizontal position locks the Cord Clip in place along the cord. This allows you to adjust the interior volume of the sleeping bag, as well as adjust the bags position on top of the sleeping pad. Secondary clips help seal out drafts when the temperature really drops. This unique design offers significant advantages. The ability to attach your sleeping bag to the top of the pad, as well as the ability to easily adjust the girth/volume of the bag, allows you to optimize the position of the bag depending on your sleep position, and the level of warmth you need from your bag. In warm weather you have much more room than you are used to in a mummy bag. In cold weather just close the bag in around you for maximum warmth.

We have engineered our Cord Clips to be strong and durable, while being thin and unobtrusive. Even if you have your sleeping bag pulled in under your body, our Cord Clips are designed to lie flat and to be unnoticeable. Our Cord Clip system is fast, simple and easy to use. Attach the cords around your pad before you leave home. Then just lay out your pad, clip your bag on to it, adjust as needed, and sleep!

Differential Cut
Our sleeping bags feature a substantial differential cut, which is highly beneficial in a quilt style sleeping bag with adjustable girth. The shell fabric is cut wider than the liner fabric, making the circumference of the shell larger than that of the liner. This means that when you start to draw the bag in on a cold night, you’re less likely to crush the insulation creating cold spots. This is a detail that many manufacturers overlook, but we think it’s one of the keys to a more effective quilt, and a warmer night’s sleep.

Continuous Baffles
The baffles in our quilt style sleeping bags are continuous from one side to the other. This allows down to be moved to the top, sides, or bottom of the quilt when temperatures fluctuate. On warm nights, you can move the down to the sides or bottom, allowing a little heat to escape. On cold nights, move more down to the top of the quilt to keep that body heat in. This works particularly well when the quilt is attached to your pad, because the same part of the bag is always on top, no matter how you roll, toss, or turn.

Down Collar
Our quilts feature an overstuffed down collar around the neck opening. This critical feature means you can comfortably seal warmth inside your sleeping bag without choking yourself with a scrawny drawcord.

Trapezoidal Foot Box
Optimized for when you need the most room, lying on your back, our trapezoidal foot box fits great no matter what position you are lying in. Plus we overstuff the baffles over the foot section to provide extra warmth. Our goal is simple: we want you to have warm, happy feet while you sleep.

Separate Hood
When you think about it, a separate hood really makes sense. If you toss and turn, your quilt stays in place on top of your pad, and your hood stays in place on top of your head. You are not going to wake up in the middle of the night, lost somewhere in your mummy bag, wondering which way leads out.

Do you need a hood? Here is what we have found: if temperatures are going to be near the temperature rating of your quilt, then you will probably need a hood. If the forecast calls for warmer weather, leave the hood at home, and just wear a warm hat to bed. Looking to save weight and get the most use out of minimal gear? Take a warm jacket with a hood, and wear that to bed if the weather is cold. You keep your head warm, and add extra warmth to your entire sleep system.

Bivy Sack in Conjunction with Quilt
Our water resistant, highly breathable bivy sacks are designed for use under a tarp or floorless shelter. These bivy sacks provide a waterproof floor, full bug protection, and a water resistant upper to protect your quilt from spray and mist. Our bivy sacks are designed to integrate perfectly with our quilts. Simply attach your pad to the floor of the bivy through the pad attachment cords, then clip your quilt on to these same cords. Your pad stays in place in the bivy; your bag stays in place on the pad. Leave your pad attached to the bivy and setup the next night is a breeze.

The System as a Whole
What does it all mean? Set up and adjustment are quick and simple. The quilt stays in place on top of your pad. The hood stays in place on your head. All our components are designed to work together, but the system is also designed to make the most of gear you already have. Our quilts can be partnered with almost any sleeping pad you like. Use your hooded jacket or a warm hat on cold nights. Use the tent you already own, or partner our bivy with your tarp. All in all, you are making the most out of every piece of gear, while resting comfortably no matter what position you sleep in.

The bottom line? Our sleep system is much more versatile than any conventional sleeping bag, and it weighs a lot less!

Customer Reviews

4.9 Based on 41 Reviews

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GB

01/14/2021

Garry B.

Australia

Alsek Quilt

I have used the Alsek on several hikes now, including Australian alpine (out of Thredbo) and much warmer Wolgan Valley. The Alsek has been outstanding; the quilt is versatile and the product quality is sensational. Highly recommended!

GD

01/09/2021

Glenn D.

United States

All I hoped for

I did a lot of research before buying this quilt and the consistent feedback on this quilt is that the temp rating is a comfort rating. The night I received my new quilt I set up my tent in the yard to test it out. Temps got down to low 20’s and I was toasty warm. I was sleeping on a Nemo Tensor pad and had base and mid layers on. I do sleep in a thin Sea to Summit bag liner which supposedly are dds around 10 degrees to rating, but it didn’t help with the 20 degree bag the Katibatic quilt is replacing. This week on an overnighter at 4200 ft with same set up again in the lower 20’s with some wind, again toasty warm. I’m 6’4” and have the long and wide version. I didn’t even have the quilt tied to the pad. Just wrapped it around me. I’m an active sleeper and manage best with few constraints. I couldn’t be happier with this quilt as my go-to sleep system for 4 season camping here in Southwest Virginia. Well done Katibatic!!!!

NS

01/01/2021

Nancy S.

United States

My son LOVED this

I purchased this for my son and he could not have been more thrilled. He plans to use it when he goes hunting out west and it suits his purposes wonderfully. Warm, with room to stretch and turn, it really suits his linebacker shoulders. He simply could not have been more thrilled!

SC

12/31/2020

Steve C.

United States

Nothing to review

Love to share my review but unfortunately, after over a month and a half, I have still not received it.

01/04/2021

Katabatic Gear

Hi Steve. We're so sorry, but it does look like your quilt was a victim of the holiday rush at the USPS. Though your quilt left our shop on time, it sat at the sorting facility for three weeks (sadly, you were not alone)! We've checked your tracking information, and we're happy to say that your quilt is out for delivery. We hope you'll update your review once you've been able to spend some time with your new gear! Feel free to reach out with any questions you might have (info@katabaticgear.com).

ST

11/13/2020

Shawn T.

United States

You know that feeling...

...that you get when you receive a new piece of gear? How excited you are to tear open the box and see just how awesome it is, knowing that you’ve paid quite a bit of money for it and praying that it is all you’d hoped for? Well let me tell you - this quilt exceeds expectations in every possible way. For context, I’ve owned quilts and bags from several mass production manufacturers, as well as quilts from two prominent cottage shops. I decided to sell a couple and take a chance on Katabatic based on reviews from several trusted sources, including Backpacking Light and The Trek. When I opened the box, I was immediately impressed by the quality of the cotton storage bag. It’s heavy duty, has a great cinch and drawstring. In short, no expense was spared here. The quilt itself is gorgeous. The stitching is so tight and clean. It lofted so quickly once out of the box and the fabric has a great feel. Weight and measurements are as advertised. The included stuff sack is great and Katabatic includes pad attachment accessories for all setups. While Inhavent yet taken this bag out on trail, it’s quite obvious that these guys have game. If it performs as well as I expect, then I will likely never look elsewhere when in the market for a quilt.