Six brightly colored durable plastic "stones" of varying sizes (2 pieces of each size) invite many possibilities of balance activities, motor planning activities, and obstacle courses. Each size of a stone has a different slope that can be changed and different tactile patterns (dot, lines and concentric circles). Stack the stones for varying heights. Anti-slip surfaces to prevent moving. All the stones are neatly packed in their own carrying case for easy storage or moving from one place to another.