Heat-regulated and extremely lightweight, this QUALLOFIL-AIR 4 seasons double-duvet will keep you comfortable all night long. Product Details: • 175 g/m² duvet for summer, and a 300 g/m² duvet for mid-season, put the two together for winter (fasten together with ties). • Quality & Value for its filling: made up exclusively of extra-fine silicon hollowfibres, ultra plump and ultra lightweight, 100% polyester, allowing better circulation of air and reducing build-up of moisture. • Cover: 100% cotton percale. • Stitching: dashes. • Care advice: machine washable at 40°C, tumble dry at low temperature.