The Goose Down 2+1 Four Seasons 80% Quilt Range by Armidayle features two layers which clip together at the sides and corners, giving you the flexibility to meet the changing climate all year round. This 2-in-1 design can be used in the following ways: Winter - Click both quilts together for maximum warmth Summer - Simply separate one quilt and it becomes ideal for summer (The second quilt is also useful, when you are having guests to stay) Autumn and Spring - Use either quilt, tailoring to your individual warmth and comfort The down component of the quilt is composed of the soft and fluffy clusters that grow under the outer layer of geese to protect them from the cold. The higher the down content, the warmer and lighter the quilt will be. The feather component adds loft to the quilt allowing it to look and feel fuller, without weight. Each quilt has been especially de-dusted twice during the manufacturing process to improve its purification. They are then put through an extra wash to further improve the quality of the product, removing all impurities naturally inherited with down products and in turn leading to higher loft quilts, more breathability, and better natural warming properties.