Choose la redoute quality with this rverie double duvet for guaranteed softness and comfort perfect all year round a 175 gm duvet for the summer and a 300 gm duvet for in between seasons join the two together to form the winter duvet fastened wchoose la redoute quality with this rverie double duvet for guaranteed softness and comfort perfect all year round a 175 gm duvet for the summer and a 300 gm duvet for in between seasons join the two together to form the winter duvet