Cerium Series: Streamlined, lightweight goose down filled jackets made of a composite construction to provide warmth where it is needed most. High warmth-to-weight ratio. SL: Super Light. Uses the lightest weight materials available to provide high weather protection, performance and/or packability, but with the right amount of durability. As the lightest down piece in the collection the Cerium SL Jacket functions primarily as a warm mid-layer. Down Composite Mapping(TM) strategically places Coreloft(TM) synthetic insulation in areas where moisture may buildup, down in the core and the hood provides maximum warmth. The NEW super lightweight Arato(TM) face fabric with DWR provides light moisture protection. Features: Moisture-resistant outer face fabric Breathable Insulated Great warmth-to-weight ratio Lightweight Compressible and packable Wind resistant DWR finish (Durable Water Repellent) helps repel water from fabric surface Down Composite Mapping strategically places Coreloft(TM) synthetic insulation in areas where moisture may buildup and down in areas for maximum warmth Low collar with rear stretch knit comfort panel Insulated collar Chin guard Full front zip with chin guard Corded zipper-pulls reduce noise and are easy to grab Elastic cuffs Elasticized rear hem seals out draft Two hand pockets with zippers Includes stuff sack Trim fit, Hip Length Weight: 165 g / 5.8 oz Activity: Rock Climbing / Ice Climbing / Alpine Climbing / Hiking / Trekking / Travel/Commute Materials: Coreloft(TM) 100 (100 g/m ) insulation. Made with highly crimped multi-denier siliconized polyester yarn, this lightweight, breathable, and thermally efficient, 100% polyester staple fiber is very compressible and has excellent loft retention. 850 fill European grey goose down Arato(TM) 7 - 100% nylon Coreloft(TM) 40 (40 g/m ) insulation. Made with highly crimped multi-denier siliconized polyester yarn, this lightweight, breathable, and thermally efficient, 100% polyester staple fibre is very compressible and has excellent loft retention.