Description: Simple for elementary level students yet comprehensive enough for middle school, this colorful teaching model was designed specifically for hands-on use Made of resilient, non-toxic PVC plastic to withstand years of active investigation Measuring approx. 11.5 x 10cm / 4.5 x 3.93 Inch Suitable for high school or college students, or ages 14 to 21 Specification: Material: PVC Plastic Overall Dimension: 11.5 x 10cm / 4.5 x 3.93 Inch Color; as shown in display pictures Package Includes: 1 Piece Plastic Teaching Model