This 24 pcs ninja stampers assortment is great as party favors, classroom giveaways, karate tournaments and perfect teaching aid. These stampers are also perfect for creating greeting cards, decorating stationery and scrapbooking. Have this stamp assortment at home, in the classroom, and even in art class! The brave ninja warriors have given us their approval. Our stamps are non-toxic, lead-free, have passed all CPSIA and ASTM testing. Safe for children to use. 1.5 inches tall, 1 inch in diameter.