Stack & play with the fun & colourful My First Building Blocks Stacking Fish Puzzle, from Hamleys. My First Building Blocks Stacking Fish Puzzle is a solid wood puzzle with chunky & eye-catching pieces that will hold children's attention & are easy for them to handle. My First Building Blocks Stacking Fish Puzzle has been designed so that your child can learn through play & will help to develop their coordination, imagination, early-learning & problem-solving skills. Hamleys My First Building Blocks Stacking Fish Puzzle will quickly become a cherished toy box favourite.