Features: Acrylic with excellent transparency, this prisms clearly demonstrates light refraction and dispersion while being safe for kids' science experiments. Fun Optical Experiments: Easily creates rainbow spectrums through simple operations, sparking children's interest in physics without complex equipment perfect for classrooms or family educational activities. Compact & Portable Design: Measuring just 5x3x3 inches, this light in weight prisms fits in pockets or backpacks, enabling outdoor optical exploration during travels or nature adventures. Safe & Sturdy Construction: The shatter resistant acrylic withstands drops better than glass, making it ideal for active kid scientists while maintaining crystal optical performances. STEM Learning Tool: Encourages scientific thinking by demonstrating light principles, fostering creativity and problem solving skills an excellent physics teaching aid for future scientists. Specifications: Component: Acrylic Size: approx. 5x3x3cm/1.97x1.18x1.18inch Color: 3 Option Quantity: 1 Pc Package Includes: 1 pc prisms note: 1.Please allow 1-2cm errors due to manual measurement, note that you donot mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.