... , tussah silk, polyester fiber, cotton, bamboo fiber, soybean fiber, milk fiber, etcFilling Weight:600g,800g,1200g,1600g,2000g,etc(different weight for quilt in 4 seasons ... MILK DuvetWashing:By hand or machineDrying:Hung up and air quilt in the gentle soft sun for about 4-5 hours ...