An adventure in color, light and sound! Indulge your child's appetite for exploration by combining blocks to form new colors and sounds, or stack the blocks in a different order each time to form new and exciting shapes. Smooth hardwood frames with primary colored acrylic windows. Sized to standard unit block measurements. Eight blocks per package: 4 rectangle and 4 half moon shapes. Features plexi inner with colored sand.Solid wood frames with inset colored acrylic windows and colorful sandSet includes 4 rectangles and 4 half moon shapesStrong hardwood framesTranslucent windows with colorful sandStandard unit block measurementsMaterial: Hardwood frames with primary colored, transparent plexi windows and colored sandEducational Focus: Hand-eye coordination, visual perception, color exploration or light table activitiesSuggested Age: 2+