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 acrylic windows and colored red, blue, green and yellow sand. Ages 2+.