Children can see how Praying Mantises change as they grow with Insect Lore's Praying Mantis Life Cycle Stages. These oversized, anatomically correct figures have been accurately painted and sculpted to show the four stages of Mantis development: Soft Egg Case, Hardened Egg Case, Nymphs and Adult Praying Mantis. This detailed, four-piece set is made of durable, flexible plastic and is fun and educational. Mix them up and encourage your child to place them in the correct order. Recommended for Ages 4 and up.