All KEVA Planks are designed with the same precise dimensions for perfect stacking and building, but not all KEVA planks are made the same. At KEVA, we offer premium-quality KEVA Planks made in the USA from durable, sustainably sourced maple wood. MindWare sells KEVA sets under license that are imported.  Imported KEVA sets use pine wood, which is a softer, lighter material than maple. Both versions are great for open-ended play and learning, the difference lies in the the type of wood and where the planks are made.