These clear stamps peel off their backing and stick to any acrylic block making for easy stamping. Simply apply your favorite ink and stamp crisp clear images! They are made from 100% photo-polymer which is latex free, phthalate free, non-toxic and biodegradable. Use the die for an added layer! This package contains Believe In Yourself Narwhal: a set of 20 clear stamps on one 4x6 inch backing sheet and seven dies measuring between 1.125x.875 inches and 3x1.875 inches. WARNING: Choking Hazard. Not suitable for children under 3 years. Made in USA.