A clean, easy-to-use permanent adhesive. Sticks to paper, cardboard, photos, and fabric. Easy-to-see purple adhesive dries clear and wrinkle-free. Photo safe. Non-toxic and washable. Cap size meets regulations to reduce choking hazard in children under 3. Sold in packs of two, 0.25 o. sticks. Conforms to ASTM D-4236.