We love that the wood is naturally dies with non-toxic materials. It can be chewed on without any paint chipping into babies mouth. My son uses it as both a puzzle and as stackers
This puzzle is so beautiful, my almost 18 month old has been really loving it and it's just a little more challenging than his other shape puzzles we've been using (Plan Toys)! Although the shapes are different heights, the holes are the same size making it a little easier to match the shape to the correct spot!