Western Mountaineering Lynx MF


short regular long
Weight 3 lb 0 oz / 1360 g 3 lb 2 oz / 1420 g 3 lb 5 oz / 1500 g
Fill weight 1 lb 14 oz / 850 g 2 lb 0 oz / 905 g 2 lb 2 oz / 965 g
Loft 8.5 in / 21.5 cm 8.5 in / 21.5 cm 8.5 in / 21.5 cm
Temperature rating -10 F / -23 C -10 F / -23 C -10 F / -23 C
Fill 850 fill-power down 850 fill-power down 850 fill-power down
Shape Mummy Mummy Mummy
Max user height 5 ft 6 in / 165 cm 6 ft 0 in / 180 cm 6 ft 6 in / 200 cm
Shoulder girth 61 in / 157 cm 62 in / 157 cm 63 in / 160 cm
Hip girth 54 in / 137 cm 54 in / 137 cm 55 in / 139 cm
Foot girth 39 in / 97 cm 39 in / 99 cm 39 in / 99 cm

Where to Buy

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Manufacturer's Description

Visit Western Mountaineering's Lynx MF page.

Retailers' Descriptions

Here's what other sites are saying:

Possibly the warmest 3 pound bag on earth At only just 2 ounces over 3 pounds and compressed to roughly the size of a basketball it is difficult to imagine that the Western Mountaineering Lynx can really be warm down to 10 degrees below freezing. Laid out, the Lynx MF's 32 oz. of premium down lofts to surround you with an outrageous 8.5 inches of comfortable loft. In addition to copious amounts of premium down, a full down collar keeps heat from escaping at the neck and shoulder section of the bag. A well filled draft tube at the zipper prevents heat loss and zipper snags. Don't be fooled by the low weight, the Lynx is one toasty warm bag. If you treat your sleeping bags like Linus treats his blanket, you'll have nothing to worry about with the Lynx MF. Durability can be attributed to excellent craftsmanship and the strong yet water resistant Microfiber construction. Microfiber fabric is very water resistant because it is constructed with an extremely high thread count of dense yarns. Each microfiber yarn has many more filaments than a normal nylon or polyester yarn of equivalent size. Woven into high thread count material, it becomes a fabric that really keeps wind and water out. Since there is no coating or laminate on the material, it is highly breathable. The fabric construction is responsible for weatherproofness, it's not something that can wear off, wash out or delaminate. This is the most technologically advanced non-laminated weather resistant fabric available. Western's Bristlecone will keep you warm and dry through years of use. Features and Benefits a Extremely breathable yet water resistant Microfiber shell offers protection from condensation and frost. a 6" Spacing/V-Block side Baffle keeps insulation where it belongs. a 62"/39" Shoulder/Foot Girth leaves loads of room for bigger folks or more gear. a Full Down Collar ensures that there are no cold spots. a Draft Tube seals heat in at the zipper. a 8.5" Loft, -10Adeg F rating a 32 oz. Down Fill. a Just 3 lbs. 2 oz. total weight. a Made in the USA.

- Bentgate.com

When the sun goes down and takes warmer temperatures with it, the -10deg Lynx from Western Mountaineering will keep you toasty with high-lofting 850+ fill goose down in a water-resistant MicroLite XP shell.. . . . 850+ fill European goose down with 8.5 in. of heat-trapping loft provides longevity, compressibility, and a luxurious drape. Baffle construction with 6 in. spacing and V-block side baffles to keep down in place. MicroLite XP densely woven shell fabric is lightweight, highly water resistant, and highly breathable-ideal for down sleeping bags. DWR shell fabric treatment protects the down from spills and condensation. Hood with enough down fill to surround your face and forehead. Plump down-filled collar wraps snugly at the neck and cinches with a bungee drawcord. Well-fitted draft tube prevents cold air from entering the bag. Inner shell fabric cut narrower than the outer shell to promote proper lofting and to protect the down against compression. #5 YKK coil zippers with locking sliders provide years of trouble-free use. Stiffening tape along the zippers ensure snag-free use. Two-way zipper for ventilation options. Water-resistant stuff sack with handle loop for use on the trail. Storage sack to keep your bag lofted when you get back home.


Quite possibly the warmest three-pound bag on the market, the Western Mountaineering Lynx MF sleeping bag takes a bite out of brutally cold winter nights. Made for human powered winter camping, mountaineering expeditions, and backcountry ski trips, the efficient -10degF Lynx boasts 8-inches of loft, yet weighs a mere 3 lbs. 2 oz. The V-Block Side Baffle, unique to WM's true winter-specific bags, ensures perfect down distribution.-- MicroLite XP(TM) shell is very weather resistant while remaining extremely breathable-- A slightly over-sized winter fit ensures comfort when extreme weather necessitates an extra layer or two-- A full 3-dimensional down filled collar full provides a protective seal from the bellows effect as you move about inside your bag-- Enjoy easy ventilation with a full-length #5 YKK Coil Zipper featuring two locking slider pulls for convenient access from inside or outside the bag-- Dacron(R) stiffening tape ensures smooth zipping and prevents zipper jams-- Robust insulated draft tube keeps heat from escaping through the zipper-- 8 1/2'' Loft provides luxurious warmth and compressibility-- 6'' spaced baffles allow maximum loft while preventing down migration-- V side block baffles ensure that insulation stays put and increases the number of down filled chambers to warm quicker-- DWR finish keeps moisture at bay even after multiple washings-- 62''/39'' Shoulder/Foot girth-- Stuff sack and large volume storage sack included-- Proudly made in the USA-- Closeout models have black fabric on the ground-facing side of the bag

- OMCgear

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.

- Backcountry.com