• The 4-season double-layer duvet is a versatile option that allows you to face each season with maximum comfort. • You can combine the buttons to make a warmer duvet for winter, while in the mid-season, a cool and breathable layer will keep you fresh. • These duvets are made with top-quality materials, ensuring their safety and comfort. • However, please note that the duvet cover bag is not included. • If you prefer a specific mid-season solution, the Flowen spring duvet is designed to provide maximum comfort and freshness during this season.