The Montane Antifreeze jacket is an ultralight, water resistant, very high quality down jacket

Using 93% of exceptionally high quality 800+ fill power wild Ukrainian goose down and a windproof shell fabric which is waterproof to 1600mm, the Montane Anti-Freeze is a really versatile down jacket for extreme cold and damp winter conditions. The jacket has been designed to minimise weight and bulk yet deliver one of the greatest warmth to weight ratios of any Montaneâ garment. It is an essential piece of winter equipment which can be easily stowed and carried; and then worn when relatively static in extreme cold conditions, either in mid-winter, camping at altitude, or when rested in polar regions.

Details
Active cut with slight drop tail
Stitch through construction with vertical tail baffling and mini-baffles over the shoulders
Full-length reversed and baffled two-way front zip
DWR Beardguard lined collar
Two hand-warmer pockets with reversed zips; concealed map sized chest pocket
Part elasticated self fabric cuffs with hook and loop adjustment
Single handed adjustable elasticated draw-cord hem and cinchable waist
Own unique storage and waterproof stuff sac 
 
Fabric
Outer: FREEFLOW® Ultra-lite
- 31g/m² ultra-lightweight coated Nylon rip-stop
- Waterproof to a minimum of 1600mm of hydrostatic head with a minimum MVTR of 4000g/m²/24hrs
Lining: Ultra-soft PEAQ® Down
- 30g/m² Ultra lightweight Nylon 6.6 plain weave
- Durable water resistant finish
- Fast drying and highly breathable
- Ideal lining fabric for active use garments
- Exceptional comfort against skin
Filling: 145g of 93% Ukranian wild goose down at 800+ fill power US method

Weight
410g / 14oz: Medium