"Designed for flexible comfort through the year, the Homescapes Premium White Goose Down All Seasons Duvet pairs two duvets in one set: a lighter 4.5 tog for warmer nights and a 9 tog option for cooler seasons. When temperatures drop, the two can be attached together using plastic fasteners and discreet button holes to create a cosier 13.5 tog duvet for winter. Both duvets feature baffle box construction to help air flow freely and reduce cold spots during the night. The filling is encased in 100% down-proof cotton (300 thread count), chosen to help prevent feathers from poking through while remaining breathable. For everyday practicality, the set is machine washable at 40°C and comes with a 10-year guarantee for added peace of mind. Key features All-seasons set with 4.5 tog and 9 tog duvets Attaches together with plastic fasteners and discreet button holes to create 13.5 tog warmth Baffle box construction to support airflow and help prevent cold spots Cover material: 100% cotton, 300 thread count, down-proof Filling: minimum of 70% snow white goose down 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."