HAMPTON ART-Cling Stamps. Hampton Art offers premium quality rubber stamps in a wide variety of images and themes to match any and every project or design style. Each stamp is mounted on 1/8-inch thick cling foam and can be used with any acrylic block. This package contains six cling rubber stamps of assorted shape and size on an 8x4 inch backing sheet. Design set: Hot Air Balloons. Imported.