"From HOMESCAPES, the Premium White Goose Down All Seasons Duvet is designed to adapt through the year, with two duvets that can be used separately or combined for extra warmth. Choose the lightweight 4.5 tog duvet for summer, switch to the 10.5 tog option for spring and autumn, or fasten them together to create a 15 tog duvet for colder winter nights. Integrated plastic fasteners and button holes make it easy to secure the pair when you want the warmest set-up. Filled with a minimum of 70% snow white goose down, each duvet is finished with a 100% down-proof cotton cover (300 thread count). Both duvets use baffle box construction to help keep the filling evenly distributed, supporting consistent comfort across the night. For everyday practicality, they are machine washable at 40°C and come with a 10-year guarantee. Key features All-seasons set with 2 duvets: 4.5 tog and 10.5 tog Can be fastened together to create a 15 tog duvet Integrated plastic fasteners and button holes for securing the duvets Filling: minimum of 70% snow white goose down Cover: 100% down-proof cotton, 300 thread count Baffle box construction to support even filling distribution Machine washable at 40°C 10-year guarantee Sizing Single: 135cm x 200cm (54"" x 79"") Double: 200cm x 200cm (79"" x 79"") King size: 230cm x 220cm (90"" x 87"") Super king size: 260cm x 220cm (103"" x 87"") Care Machine washable at 40°C."