Acid-free. Photo-safe. Allows for repositioning. Dries permanent. Fast tack - dries clear. Specially formulated for mounting items to a variety of surfaces, including plastics, photos, fabrics, paper, foil, cork, metal, wood, films, felt, foams, canvas, glass, cardboard, foam rubber and leather. Sprays wide to cover large areas. Resists "bleed-through ". Size: 4 oz.