Metal frame, the product is a \"velvet\" on the back, put pictures, can also be a picture hanging on the wall combination wall, this product color besides red bronze, substitute also provide other customers need any color (such as silver, gold, GuXi color, etc.) Product specifications: there are 8 large, small and different sizes (3.5x5\")9x13cm/(4x6\")10x1cm/(5x7\")13x18cm/(6x8\")15x20cm/8x10\")20x25cm/(8x12\")20x30cm(A4)/25x30cm/30x40cm. Each product has a colorful box (with bubble pockets).