Shown here

while the DWR treatment on the front and sleeves provides additional protection

Merino wool helps manage moisture

Fitted with ultra-fine heating elements

and small maps

Arc'teryx Beta Down Insulated Jacket M Flat (Cylindrical) Shown hereArc'teryx's warmest Beta combines waterproof, breathable GORE TEX protection and down insulation in a jacket built for a range of mountain and alpine activities in winter conditions. 2L 40D GORE TEX provides durable waterproof, windproof, breathable protectionPFCec free DWR (Durable Water Repellant) finish repels moistureLofty 850 fill European grey goose down delivers exceptional warmth for its weight and is RDS (Responsible Down Standard) certified