Montbell Down Jacket Women's Alpine Down Jacket - 800 Fill
Montbell Down Jacket Women's Alpine Down Jacket - 800 Fill
- In stock, ready to ship
- Backordered, shipping soon
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7 day exchange (except for base layers and underwear)
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4-6 day trackable shipping
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Packed with care
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Minimal use use of plastic
Engineered for uncompromising alpine performance. This jacket utilizes box baffling to maximize the loft and performance of its premium 800 Fill Power EX Down, delivering powerful warmth without the penalty of excess weight. The shell features a tough, slick exterior to resist abrasion, ensuring durability on rock and ice. Critical utility features—including a helmet-ready hood and a two-way zipper for belay access—are integrated to provide maximum efficiency and security during technical winter ascents.
- Material: 20-denier nylon ripstop (PFAS-free water repellent finish)
- Lining: 20-denier Ballistic nylon taffeta (anti-static finish)
- Insulation: 800 Fill Power EX Down
- Weight:360 g/ 369 g (total weight)
- Color: NAVY (NV), IVORY (IV)
- Size: S, M, L (See our size guide)
- Compressed Size: Φ14 x 22 cm
- Style #1101711
- Actual color may vary
- Box Construction allows down to loft to its max potential while reducing cold spots
- Downproofing helps keep down from escaping through the face fabric
- 2-way front zipper allows for access from the bottom
- Zip End Guard protects your chin and face
- Articulated arm improves fit and allow for dynamic movement
- Alpine Cuff helps keep wind and snow out
- Inner drawcord adjuster allows for cinching the hem while helping keep out chill air
- 3 pockets (2 zippered fleece-lined hand pockets, 1 zippered chest pocket)
- Stuff sack included
Details
EX Down: World class, high quality down in three grades.
1000 Fill Power EX Down
This is Montbell's highest quality down, and it provides an extreme warmth-to-weight ratio. The down is carefully selected from waterfowls raised in climates with extreme temperature differences.
900 Fill Power EX Down
Super high-quality 900 Fill Power EX Down provides an outstanding warmth-to-weight ratio. The down is sourced from large, mature water fowl.
800 Fill Power EX Down
High-quality 800 Fill Power EX Down provides an excellent warmth-to-weight ratio at a cost-effective price.
Heat retention comparison
The quality of down is indicated with a unit called fill power (FP). When measured at a uniform weight, down with a higher fill power is loftier, holding more air and taking up more space (as shown in the photo below).
What does that mean?
Simply put, using down with a higher fill power allows us to create lighter, more packable pieces of insulation. As an example, let's say we create two identical jackets with the same level of heat retention, but one is filled with 550 fill power down, and the other is filled with 1000 fill power down. The 1000 fill power down jacket will be lighter and more packable. In general, 550 to 700 fill power is considered to be of good quality. However, EX Down surpasses that with 800 to 1000 fill power.
Box construction
Walls of fabric are inserted to create gusseted, box-shaped baffles. This construction allows down to loft to its maximum heat-retaining potential while reducing cold spots.
A range of options to suit various situations and applications.
Montbell classifies its lineup using the indicators 'lightweight, midweight, heavyweight, and super heavyweight,' with the "heavier" options providing higher insulation. We recommend selecting a product by considering the balance of various features such as insulation, compactness, wind/water resistance (wind, rain, and snow) based on how you intend to use the garment.

- These models use waterproof, breathable materials to enhance water-repellent and windproof performance.
- Not fully waterproof, as the seams are not sealed.
To maximize the performance of high-quality down for specific applications, it is also crucial to adopt an appropriate design. By varying the combination of down quantity, down quality, and fabric for each model, Montbell have created a diverse product lineup that caters to a wide range of uses, from midlayers and outerwear for winter activities to everyday wear and even polar expeditions.
Ethical Sourcing: The Performance Foundation
Our commitment to superior quality begins at the source. We utilize a dynamic, global sourcing strategy across European and Asian markets to secure the finest 800 Fill Power EX Down.
X-Boundaries Guiding Principles:
- Uncompromised Quality: We balance top-tier thermal performance with responsible cost management to deliver an elite product at the best possible value.
- Zero Live-Plucking: We strictly prohibit down from operations that engage in live-plucking.
- Responsible By-Product: All down plumes and feathers are ethically collected as a responsible by-product of water fowl raised for the food industry, ensuring humane and sustainable practices are at the core of our supply chain.
We continuously audit our partners to uphold the highest standards of animal welfare and maintain the unassailable quality you expect from your gear.
Montbell Down Guide

Highest quality "EX DOWN" keeps you warm and comfortable in winter.
Down Leakage and Shifting (38-332)
This product uses a thin fabric to achieve a lightweight and compact design. While the fabric is treated with down-proof finishing, small pieces of down may work their way through the fabric or stitches when the product is pushed and pulled during use. If this occurs, pinch the down from the inside and pull it back into the baffle.
Repeated wear and washing may cause the down to shift or clump. In such cases, gently tap the garment to redistribute the down evenly.
- Machine wash, cold, gentle or delicate
- Do not bleach
- Tumble dry / Normal / Low heat
- Line dry in shade
- Do not iron
- Dry clean / Petroleum solvent only
- Wet cleaning / Mild process
- USE DOWN SPECIFIC DETERGENT
- USE NET
- IF NOT FULLY SUBMERGED IN SOAPY WATER, PRESS DOWN ON ITEM BY HAND.
- WHEN DRYING, REMOVE ITEM FROM LAUNDRY NET AND PLACE IN DRYER. DRYING TIME VARIES BY ITEM. WHILE DRYING, CHECK ON ITEM SEVERAL TIMES TO ENSURE EXCESSIVE HEAT IS NOT BEING APPLIED.
- IF DOWN IS CLUMPING, GENTLY PAT WITH BOTH HANDS TO EVENLY LOOSEN.