Arc'teryx Cerium LT Down Vest - Women's Activity: Rock Climbing, Ice Climbing, Alpine Climbing, Hiking, Trekking, Travel, Commute, Around Town Cerium: Streamlined, lightweight goose down filled jackets made of a composite construction to provide warmth where it is needed most. High warmth-to-weight ratio LT |(Light Weight): Built with highly durable top performance materials but designed with a streamlined minimalist set of features to provide very light weight Fit: Trim fit, Hip length Weight: 4.9oz