The Mini Jumbuk Warm Wool Quilt has 450GSM Australian Wool filling, enclosed in a 400 thread count cotton casing. Made using Airlight Technology™, the 4-layer design and superlight cotton casing retain up to 20% more heat while being a similar thickness to standard wool quilts. Features: Made from 400 thread count superfine cotton sateen casing 450GSM, 4-layer Australian Wool filling design