Kaisercraft-Fiesta Texture Acrylic Stamps: Geo Background. Clear stamps are an easy way to add inked images to paper crafting projects. Simply adhere them to any acrylic block, ink and stamp! This package contains one clear acrylic stamp on one 5-3/4x2-1/2 inch backing sheet. Photo friendly. Conforms to ASTM D 4236. Imported.