It is good for developing hand-eye coordination logical thinking and creativity. Each building block has round and smooth surface it won't scratch children's hand. Manufacturered by Fishlor. There are 100pcs building blocks with different animals figures and Chinese characters on them which will bring great fun to children. Suitable for children's brain training and it can also be a great toy to relieve stress for adults. Made of high quality environment-friendly wood material non-toxic and safe for children to play.