HERO ARTS-Clear Stamps. These clear stamps peel off their backing and stick to acrylic blocks; making for easy stamping. Made from genuine photo polymer for crisp and clear images. Simply place them onto an acrylic block; apply your favorite ink; and stamp! Made from 100% photo-polymer; non-toxic; latex and phthalate-free. Available in a variety of designs: each sold separately. Number of stamps per package varies by design. Made in USA.