Seasons: All year Filling: 90% White New European White Goose down, 10% feather Casing: 100% Combed Egyptian Cotton Percale 300 threads/inch² Weight of filling: 90g/m² and 180g/m² Tog: 5 and 9 Anti-mite treatment The combination of two duvets in one, has been developed to make you discover sleep in an aspect you will never forget: a light duvet for summer and a heavier, with box construction for the Autumn. Specific fasteners make it possible to attach the two duvets together: in winter, you can sleep in a luxurious warm duvet. The White Goose Down comes from the best geese breed in Europe. They give the duvet exceptional properties of insulation while guaranteeing a lightness for comfort and unique softness. The casing of these two duvets is made of long-fibre Combed Egyptian Cotton of exceptional quality of 300 threads/inch².The extremely soft finish of this cotton makes for a good night’s sleep.