My 1.5 year old LOVES these blocks. He loves to read and fold all the letters and I love that they don't contain any toxic ink. It's a lightweight wood that makes stacking surprisingly easy. If my child doesn't center one on top of the other, it stays on because it's so light. Physics isn't my thing so I don't know why, but my kid can build taller off-center towers with it than other blocks. No chemicals, nice blocks, A++!
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