... , 1.5d*38mm,2d*51mm, hollow fiber Widly use in quilt,winter cloth,sleeping bag,pillow,cushio polyester staple fiber/hollow widely used in spin, toy ... ,quilt,winter cloth,sleeping bag,padding,pillow,and produce spraying ... HCS7d*64mm HC HCS15d*32mm HC HCS15d*64mm HC HCS polyester staple fiber/hollow fiber