Firstly, the product details here are rather misleading as the make is actually Haba and not Marbel - not that I have a problem with this because Haba make excellent toys, I just thought it was worth mentioning. These are extremely attractive, interesting and well-made blocks and my son, who is fourteen months, seems to like them a lot. They are smaller than I expected but I actually think that this is ideal for younger toddlers, as they are easy to handle. He has enjoyed the Haba Discovery Balls immensely and so I thought it would be nice to get something similar that he can build with. The problem here is that, owing to the shiny painted surface, these blocks are not easy to stack on top of each other. They are not too bad when used with unpainted wooden blocks but have rather put me off buying any further coloured Haba building blocks in case we have the same problem - this is why this toy has not been given five stars. However, I think they are brilliant blocks to be explored and carried around and I'm sure they'll be enjoyed for years.