This military toy set can stimulate your child's imagination and can also be used as an educational tool for teaching your children about World War II. All pieces have smooth edges and are made of Polypropylene plastic and BPA free making it safe for children to play with. However, this toy set is not recommended for children under the age of 3, and parental supervision is advised. Smallest piece to largest piece ranges from 1.2 x 1.2 x 0.5 inches to 2.5 x 4.2 x 0.8 inches. 56 pieces in the set.