My sister in law gave my 10 month old daughter a set of these blocks that belonged to her children. My daughter absolutely loves them. They are a very heavy duty cardbored, but are well made and sturdy. They have beautiful laminated pictures on the outside of animals and numbers. My sister in laws children had them for a good few years and they look good as new , despite being one of their favorite toys. My daughter adores pushing the stacked blocks over. I'm hoping she'll be able to stack them herself before too long! They're a really versatile toy and are great for me to play with my daughter as she loves pointing at the animals and hearing me moo, baa, woof, miaow and twit-ta-woo etc!She also loves finding other toys that I've hidden inside them. I think its going to be a good few years before she grows out of them and I can see them becoming very well played with and a firm favourite of hers. Would definitely recommend for any child from about 8 months onwards.