... material, environmental protection and safety to you.2.Shapes can be designed according to your shoes (bar, square, rectangle ... odor removal.5.Reuse and environmentlly.6.Unique shoes shape, very convenience to put in shoes and shoes box.7.Activated carbon ... .Application:1.Mainly used in metallurgy, iron and steel, petroleum, chemical, and electric field for purification, decolorization, dechlorination, ...