... hand-feel,and wool with diameter more than 15D is coarse fiber with good elasticity (e.g. Wool with7D ... in furniture factory and toy factory ).b.28mm and 32mm are short-fiber(e.g.7D×32),suitable for machine filling;51mm and 64mm ... ,e.g.toys,sofa,bench hassock,bedclothes.d.15D(silicon):Suitable for filling products,e.g.sofa,bench ... hgih-grade products,e.g.sofa,pillow,etc polyester hollow staple fiber