Dodo double duvet in 100 polyester hollowfibre silicon for extra 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 with tiesmicrofibre cover 50 cotton 50 polyester 80 gm 68 threads cm 100 polyester straight stitching taped edging strengthened with double stitching washable at 60c supplied in a case