- Solid wood frames with inset colored acrylic windows and colorful sand
- Set includes 4 rectangles and 4 half moon shapes
- Strong hardwood frames
- Translucent windows with colorful sand
- Standard unit block measurements
- Material: Hardwood frames with primary colored, transparent plexi windows and colored sand
- Educational Focus: Hand-eye coordination, visual perception, color exploration or light table activities
**On line orders will receive an email with style options available