These six wooden panels are designed for use with our Rainbow Wooden Architect Rectangles (Amazon # B07PDT5MQ6). Use them to provide a foundation for building and stacking! These smooth, rectangular panels are made from sustainable Beech wood and allow kids to stack and create structures with multiple levels. Children will love creating their own unique formations and building methods. For ages 12m+. || Size of largest panel: 9" x 6.1" x 0.3".