foam cubes for diy crafts (6x6x6 inches, 4 pack) juvale use this set of 4 large foam blocks for crafts, modeling, science projects, or party decorations. the smooth polystyrene foam allows you to easily customize using stencils, paint, twine, and ribbon, your mind is the only limitation! create one-of-a-kind party decor, floral centerpieces, or signs for an upcoming holiday party or birthday celebration. each foam cube has a diameter of approximately 6 x 6 x 6 inches and can easily be cut to your desired size or shape.