The Arc`teryx Men’s Thorium Ar Snow Jacket performs as a cold weather midlayer and as a standalone. The jackets design combines an ergonomic fit; premium craftsmanship and carefully selected fabrics. Lofty 750 fill European grey goose down delivers exceptional warmth for little weight; is durably resilient; and packs easily. The outer is soft; durable Arato™ 40 nylon. This lightweight material withstands abrasion; packs compactly and has a DWR finish to repel moisture.