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 reduce the risk of allergy. RESPONSIBLY SOURCED - The down and feather used in our products has been certified to the RDS (Responsible Down Standard). RDS is an voluntary global standard aiming to ensure that down and feathers come from animals that have not been subjected to an unnecessary harm.