ULTRA provides extreme mountaineering performance for the coldest of conditions. it uses highest heating efficiency of the thermally efficient full surrounded partition down baffle construction, and Lofty 850-fill-power white goose down volume, to provide the best temperature and compressibility, enclosure is the DWR 10 d the drilling pile ultrathin fabrics, durable and breathable, can be effective against the frozen under extreme temperature and condensation phenomenon, The lining material is 10D ultra-soft anti-drill velvet fabric, which significantly improves comfort.

Technical Specs: IFlex 10D DWR Nylon Fabrics | 850 Fill Goose Down | IFlex 10D Soft Touch Nylon Fabrics | Anti-Snag Zipper Tracks | Partition Down Baffle Construction

ULTRA-Regular Specs: Weight 1470g| Fits 176cm | Shoulder girth 154cm | Hip girth 132cm | Footbox girth102cm | Insulation 850 Fill Power Goose Down| Storage bag and stuff sack included.

ULTRA-Lengthen Specs: Weight 1580g| Fits 196cm| Shoulder girth 164cm | Hip girth 146cm | Footbox girth 108cm | Insulation 850 Fill Power Goose Down| Storage bag and stuff sack included.

Temperature Rating: EN Limit -38° C/-36° F | EN Comfort -30° C/-22° F

As a rule of thumb, the "Limit” rating should be applied for men, and the "Comfort” rating should be applied for women.

Feature:

• Efficient full surrounded type fits close to the body improved thermal efficiency;

• IFLEX®10-denier outer shell is durable but light, exceptionally breathable and highly protective against snow and the effects of condensation;

• Lofty 850-fill-power white goose down provides optimal warmth-to-weight ratio and compressibility;

• Ground-level side seams provide maximum thermal efficiency by increasing the surface volume of the top-half and ensuring sidewalls can wrap uninterrupted around the main body;

• Premium lining material is soft against the skin;

• Anatomically shaped cover of the partitioned down channel provides superior down control for long-lasting insulation;

• Different cut sizes of fabric and lining and three-dimensional sidewalls;

• Box-baffled construction uses mesh walls to maximize loft and minimize cold spots；

• Anatomically shaped footbox wraps your feet for greater comfort and warmth; 2-way zipper allows you to ventilate your feet without unzipping the entire bag；

• Lightweight and durable #5 Anti snag zipper offers easy entry and exit；

• Face gasket with cinch comfortably block drafts at hood opening；

• Vertical sidewall baffles add warmth and maximum loft;

• Strip closure combined with barrier-free zipper system;

• Built-in middle size elastic bundle pocket;

• 70/30 down filling ratio;

• Lightweight nylon compression sack and mesh storage sack included.

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