GuideCraft Deluxe Rainbow Blocks 42 Piece Set A vivid, exciting way for children to learn while playing with blocks! Guidecraft's Deluxe Rainbow Blocks are an adventure in color and light! Indulge your child's appetite for exploration through merging blocks together to form new colors, or stacking them in different order each time to form new and exciting shapes. This delightful block set consists of 42 pieces of smooth, hardwood blocks, sized to complement classic block sets, and featuring transparent windows of strong plexiglass in beautiful red, yellow, blue, and green. Looking through the colored panes transforms a child's world over and over again as the principals of light and color are discovered. Adds fun, beauty, and dimension to block building! For ages 3 years and up. Includes 42 smooth, hardwood blocks with colorful windows Windows are made of strong plexiglass Colors include red, yellow, blue, and green Shapes include semicircles, triangles, squares, and rectangles Sized to complement traditional block sets Weight: 10.5 lbs