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    ME-006937

    Sigma Women's Jacket

    Regular price $549.95
    Warm, protective and packable, the Sigma is designed for uncompromisingly fast and light mountaineering goals.
    • Ideal for: Alpine Climbing, Ski-touring
    • Weight: 580g/1 lbs 4.5ozs
    Select Colour Me-01841 Majolica/Topaz
    Size
    • Free UK mainland delivery on orders over £50
    • Hassle free returns within 30 days. Learn more

    Sigma Women's Jacket

    For over 15 years, the Sigma Jacket has represented what is possible with down insulation products: a leading light in modern alpinism. Lightweight, packable and highly water-resistant, it’s a premium performance down jacket that keeps you warm and protected during serious alpinism and mountaineering efforts where only the essentials make the cut. On multi-day expeditions among the giants of the world’s high mountains or technical lines in lone alpine cirques, it provides the warmth you need without the weight and bulk you don’t.

    For over 15 years, the Sigma Jacket has represented what is possible with down insulation products: a leading light in modern alpinism. Lightweight, packable and highly water-resistant, it’s a premium performance down jacket that keeps you warm and protected during serious alpinism and mountaineering efforts where only the essentials make the cut. On multi-day expeditions among the giants of the world’s high mountains or technical lines in lone alpine cirques, it provides the warmth you need without the weight and bulk you don’t.

    800-fill power goose down is strategically distributed through the jacket and held in place by the stitched-through baffle construction, optimising warmth and preventing down migration that can lead to cold spots, particularly in vulnerable areas such as the shoulders, chest and hood. Our down is minimally treated and DOWN CODEX approved, meaning it’s sourced through a transparent and carefully audited supply chain.

    Lightweight and highly water resistant Drilite Loft outer fabric allows the down to loft to its full potential, providing maximum warmth while protecting it against melting snow, ice and howling spindrift. Drilite Loft also offers complete wind resistance and excellent breathability, keeping you warm and comfortable even when working hard. This protective outer fabric also extends around the inner hem and the hood lining, protecting you and the jacket inner from moisture ingress in these typically vulnerable areas. Meanwhile, seam-free shoulder panels improve water resistance even when wearing a pack.

    The Active Alpine Fit accommodates the dynamic needs of alpinists, eliminating excess material and bulk that can encumber activity or obscure access to a harness while still allowing for complete freedom of movement, whether shouldering a pack, swinging axes or coiling ropes.

    The grown-on insulated hood uses our patent-pending Firestorm construction, combining a sewn-through baffle structure with a drop outer fabric to provide an invaluable defence against the elements in severe conditions. Baffle pleats reduce the overall volume without compromising warmth, and a pleated halo baffle around the face offers reassuring warmth and protection against freezing winds and spindrift.

    Internally, two large drop pockets make it easy to store gloves, hats or other essentials that need to be accessed easily while on the move.

    Features

    • Windproof, Breathable and Water Resistant; DRILITE® Loft outer fabric keeps you protected and comfortable
    • European Goose Down insulation; Exceptional warmth to weight ratio, highly compressible and durable
    • Stitched-through baffles – some with pleated finish improves loft and increases thermal efficiency
    • Our Mountain HC Insulated Hood is fully adjustable with rear volume adjustment and two frontal adjusters and can be worn with a climbing helmet.
    • Hybrid Hood Construction: The outer shell provides a protective envelope, improving the efficiency of the insulation layer underneath
    • 2 outer hand pockets, positioned to be accessible when carrying a pack or wearing a climbing harness and large enough to store gloves etc.
    • 2 Inner stretch mesh pockets for stashing gloves or accessories
    • Packs away into small stuff-sack (included)
    • Built to last. Backed up by our Product Lifetime Guarantee.
    • Designed and developed in the UK. Manufactured by a Fair Wear Foundation audited factory in China.

    Specifications & Materials

    CONSTRUCTION

    • FIRESTORM hybrid Construction (Hood Only)
    • Stitched-Through baffles with pleated finish
    • 9.5cm baffle height
    • Bound Seams

    MATERIALS

    • Shell: DRILITE® Loft 30D / 53g. 100% Polyamide with DTY yarns and microporous PU coating
    • Lining: 20D /37 g. 100% Recycled Polyamide.
    • Fill: European 800 fill 90-10 Goose Down (201g Size 12)

    POCKETS

    • Hand Pockets - DRILITE® Loft anti-snag draft backer
    • Inner Pockets - Stretch Mesh

    HOOD

    • Mountain HC Insulated Hood
    • HALO baffle
    • Internal hood cord routing
    • Internal Duraflex® cord locks
    • Rear tab volume adjuster
    • DRILITE® Loft anti-wick lining

    CUFFS & SLEEVES

    • Pre-shaped sleeves
    • Elasticated cuff with Velcro® fastener

    HEM

    • Adjustable – drawcord pullers (2)
    • Dual-tether hem drawcords wont snag
    • Drop Rear Hem
    • DRILITE® Loft anti-wick lining

    ZIPS

    • Centre Front: YKK® #5 VISLON® zipper with 2-way non-locking slider
    • Pockets: YKK® #3 VISLON® zipper with non-locking slider

    PERFORMANCE

    • Hydrostatic Head: 900mm (ISO 811)
    • Breathability: MVTR: 7000g m2 24h-1

    Impact

    MATERIALS

    • Lining – 100% Recycled
    • PU Coating - Fluorocarbon (FC) Free

    DWR

    • Fluorine Based DWR

    COMPLIANCE

    • Down insulation comes from DOWN CODEX® audited source
    • Down supply chain is RDS 3.0 certified

    MEMBERSHIPS

    • Mountain Equipment is an ISO 9001 certified company
    • Mountain Equipment is a member of Fair Wear Foundation

    PACKAGING

    • Supplied in 100% recycled plastic bag
    • Swing Ticket printed on FSC approved paper sourced from sustainable sources

    PRODUCTION

    • Produced in a Fair Wear audited factory by Toray International in China

    Our Guarantee

    Everything we make is fully guaranteed to the original purchaser against defects in components, materials and workmanship for the reasonable life of the product. If the product is found to be defective before use, or fails during use for one of these reasons we will repair or replace it at our own discretion. Find out more.

    Wash & Care

    WASHING

    • Hand wash or Machine wash at 30 using specialist down cleaner. See our care pages for more information.

    DRYING

    • Tumble Dry Cool. See our care pages for more information.

    STORAGE

    • Store in cool, dry place away from direct sunlight

    2 Inner stretch mesh pockets for stashing gloves or accessories

    Stitched-through baffles improves loft and thermal efficiency

    European Goose Down insulation; Exceptional warmth to weight ratio, highly compressible and durable

    Mountain HC Insulated Hood is fully adjustable

    2 outer hand pockets, positioned to be accessible when carrying a pack or wearing a climbing harness

    Features

    Buying guide

    In the mountains, what you wear makes a big difference. To help you pick the right products for your chosen discipline we've created our guides, to help you stay protected from all the mountains can throw at you.

    Trace your down

    What is the DOWN CODEX code?

    Click here to get a demo code and trace