An adventure in color and light! One-third smaller than unit block size, Jr. Rainbow Blocks are a new challenge in creating structures and extending traditional block play. Smooth hardwood frames with inset, colorful, transparent acrylic windows are also ideal for color exploration and light table activities. • Solid wood frames with inset colored acrylic windows • Set includes 40 assorted shapes • Durable hardwood frames with vibrantly colored insets • One third smaller than standard unit block measurements • Material: Hardwood frames with primary colored, transparent acrylic windows • Educational Focus: Hand-eye coordination, visual perception, color exploration or light table activities • Suggested Age: 2+