Montessori Wooden Rainbow Stacker - Nesting Waldorf Stacking Toys, rainbow Tunnel Stacker. Early Childhood - Elements of Nature Learning. These 7 piece rainbow semicircles are great for use by themselves. Designed to encourage a child's imagination and creativity through thoughtful, unhurried, creative play. It allows the child to learn about sorting and encourages the creativity of the child by creating shapes and patterns. Kids love to make different patterns like the rainbow tunnel, rainbow pathway, homes and a lot of creative things they love to play with. Dimensions Approx- largest - Length: 14" Tall: 7" Width: 1.5" Smooth Edges Color: 7 rainbow colors (VIBGYOR). Colors may slightly different from the pictures. Age Group - 2 to 10 years Package Dimensions: 16 x 9 x 4 in Weight: 1lb 8oz Note - Customization Available (Prices may vary), Colors may slightly vary.