Rainbow Blocks Crystal Bead (by Guidecraft)
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 inner with colored beads.