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Western Mountaineering Lynx MF Sleeping Bag: -10F Down


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Sleep warm and travel light.

It's the age old question: Do you take a warm, comfy sleeping bag that's heavy and doesn't compress very well or a lightweight bag that isn't quite warm enough? Weighing only 3lb 2oz and featuring eight inches of loft, the Lynx MF Sleeping Bag solves the problem. Western Mountaineering stuffed this winter sleeping bag with ultralight, ultra compressible 850-fill down, which keeps you warm down to -10F. A full-length draft tube and overstuffed draft collar help seal in heat for even more warmth. The microfiber shell not only contributes to the Lynx MF's light weight, it resists wind and moisture and breathes well, preserving the down's loft.
  • Lightweight sleeping bag for backpacking and winter camping
  • Shell fabric offers breathable, water-resistant performance
  • 9 inch high-loft down offers superior ratio of warmth-to-weight
  • V-block side baffle ensures perfect down distribution
  • Plump down-filled collar adds extra snuggle warmth
  • Stiffening tape along zipper prevents snagging
  • Item #WES0038

MicroLite XP (polyester microfiber)
850-fill down
Max User Height
[short] 5ft 6in, [regular] 6ft, [long] 6ft 6in
Shoulder Circumference
[short] 61in, [regular] 62in, [long] 63in
Hip Circumference
[short] 54in, [regular] 54in, [long] 55in
Foot Circumference
Draft Tube
Fill Weight
Storage Sack
Stuff Sack
Stuff Size
9 x 18in
Claimed Weight
[short] 3lbs, [regular] 3lbs 2oz, [long] 3lbs 5oz
Recommended Use
Manufacturer Warranty

Tech Specs

What do you think about this product?


>Rating: 5

More info on the Lynx MF

Spacing/V-Block Side Baffle 62″/39″ Shoulder/Foot Girth Full Down Collar 9″ Loft, -10° F 32 oz. Down Fill 3 lbs. 2 oz. Total Weight The sun is bright, the air is warm. Spring skiing is the best of both seasons, and that corn snow is great for carving tele’s. But when the sun goes down it often takes the spring with it. That’s why you’re using our new Lynx in MicroLite XP™. This -10°F bag weighs only 3 lbs. 2 oz. and has a shoulder girth of 62″. It comes equipped with our plump down-filled collar. The V-Block Side Baffle insures perfect down distribution. And the well filled draft tube has a stiffening tape that prevents snags. This efficient bag with 9″ of loft is simply a bombshell of insulation and quite possibly the warmest three pound bag on the market.


Great info - thanks Connor! Leta Western Mountaineering Rep

>Rating: 5

The perfect cold-weather bag

I've used it several times

I upgraded to this after realizing a 9lb military sleeping system is too big, bulky, and cumbersome to promote a fun trip into the backcountry. I can't believe how warm and light this thing is, and it certainly packs down to a manageable size (about that of a basketball).


I was wondering whether or not if they offer GoreTex windstopper fabrics on this bag because I am not sure how the MicroLite shell can perform in high wind. Thanks.


Why no weight?

Hey Blake, Looks like the page is missing some info. It should weigh in at 3 lbs. 2 oz - i'll see if we can get this updated a bit! Let me know if you have any other questions on it or would like any help putting in an order! Feel free to reach me at or my direct line 801.204.4547. Best, Connor

Blake - Connor is on it! Thank you for the question!