Our UltraFeather comforter is filled with quill-free natural feather and down. It is different from normal down feather comforters because it is processed an extra step to remove the solid feather quill thus giving a feather comforter a down like feel. No quills will poke through the cover. It provides softness of pure down without the inconsistency of feathers. MATERIAL - Shell - 100% Cotton, Filling - 80% Feather Fiber / 15% Waterfowl Feather / 5% Down DESIGN - box stitch design to avoid filling shifting, alternative quilt pattern, Pipping with white 100% Cotton TC 233, double needle stitch, 4 corner tabs to anchor duvet cover. KING - 106" x 90", fill weight - 106 oz. FULL/QUEEN - 90" x 90", fill weight - 88 oz. TWIN - 68" x 90", fill weight - 67 oz. CARE INSTRUCTIONS - Machine Wash HIGH TEMPERATURE DISINFECTION - The filling down and feathers are sterilized through HTD rather than a chemical way to ensure the least chemical substances left during production process, which also reduc