Tsumiki Stacking Blocks are innovative wooden toys that encourage children to think outside the box. Tsumiki blocks are composed of minimal triangular cedar wedges, known as the prime geometry that is most structurally stable. Instead of using a base, Tsumiki uses notches on its two legs which offer flexibility when connecting and stacking multiple pieces together.

Tsumiki craftsman Kengo Kuma has said Tsumikis bring out each child’s unique creativity and enable them to explore a world without preordained shapes or rules—cultivating their imagination and problem-solving skills.