... use in quilt,winter cloth,sleeping bag,pillow,cushio polyester staple fiber/hollow widely used in spin, toy,quilt,winter cloth,sleeping ... ,and produce spraying glue non-woven ,etc.The composition are polyester.conjugated silicon or not.1.5d*38mm STAPLE FIBER2/2 ... HCS7d*64mm HC HCS15d*32mm HC HCS15d*64mm HC HCS polyester staple fiber/hollow fiber