The Hungarian Goose Down Four Seasons Duvet is the most versatile and luxurious duvet in our range. It is filled with our top quality hand-plucked Hungarian Goose Down and offers the flexibility of the Four Seasons construction. The Autumn/Spring half has a tog value of 11.0, the Summer half has a tog value of 4.5 and together they make up a Winter weight with a tog value of 15.5.