Made from durable material plastic, can be used over and over again. Children can see how animals change and grow. Realistic detail showing a different stage in the development of animals. Uniquely molded textures and richly painted details bring them to life and help creativity for kids. It is a great way to expand the growth with children through physical science. Item include:Crocodile growth cycle X2, growth cycle X1,Frog growth cycle X1, growth cycle X1. Introduce your child to the wonderful world of animal and learn more. Durable enough to be used indoors or out. Great for party favors, birthday party games, educational purposes, party decoration, party favors, handouts or rewards. Notes: Not for children under 6 years in case of swallowing or choking. Weight:About 40g size:8.54 x 6.26 x 2.32 inch Material:plastic colour:As shown Package Contents: 21 * Growth cycle model Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.