They are certified "SAFE and nontoxic" and the babies live it. I works for us exactly how it suppose to They are fascinated with the blocks and it keeps then busy in play. I would buy againGreat gift, nicely madeLove these soft blocks for my 11 month old. Younger, she can play with them as teether's and slowly will learn to stack them on each other. They fit together like puzzle pieces and we can also use them to learn numbers and letters and colours.My daughter absolutely loved these blocks! They are so soft and have great texture for help with sensory play! They even have puzzle like holes in one side for when she’s older, she’s currently 7 months! She refuses to put them down!!My 1 year and 2 month old baby loves blocks. These are super well made, have nice colors and are soft so the baby can put them in their mouth. An additional item that I liked was the bag to store them.They are soft and smooth, great for teethingMy baby loves it. Every block has some sound too if you press these. He plays with these constantly. They are easy to clean.My niece loved throwing and chewing on these. They were well received. Would buy in the future for other kids