Design and Details: Versatile quilt Lightweight fabrics Ligh-lofting down and thoughtful design that's perfect for those looking to add warmth to their sleeping bag Designed for multi-season use with an excellent warmth to weight ratio Ability to easily ventilate keeps you comfortable Temperatures drop, the drawcord footbox helps you retain warmth Thermal boost Light, breathable 10D shell fabric is treated with a non-PFC DWR finish to repel moisture 20D liner fabric to deliver pure comfort Specs: 850+ Fillpower goose down with a non-PFC ultra-dry down treatment