The PlanToys Wave Stacker is a multi-dimensional building and stacking toy. The different-sized waves are easy to grasp and are open-ended for way to stack them with one another.

Can be used with existing stacking rods and base plates
Stack in a multitude of ways
Strengthens fine motor skills, supports logical thinking and improves problem-solving
Sustainably made in Thailand using chemical-free rubberwood, formaldehyde-free glue, organic pigments, and water-based dyes.