Hero Arts 4"x6" clear stamp sets offer the best quality in the market. They are made in the USA from genuine photopolymer, which is non-toxic, biodegradable, and designed specifically to transfer ink to paper for a true impression every time. Peel off your stamp from its backing and stick to an acrylic block for easy positioning. Mix and match the designs, then clean with water or stamp cleaner. A large color layering hydrangea flower. Use with our new Hydrangea Ombré pad or coordinate with our specially chosen inks in the Birds and Blossoms Layering ink pack.