Duplo is a brand of construction toys made by LEGO, designed for young children. The blocks are larger than standard LEGO bricks, making them easier for small hands to grasp and manipulate. This helps promote fine motor skills and encourages imaginative play. Duplo sets often feature themes like animals, vehicles, and buildings, allowing children to create various scenes and stories. The blocks are compatible with regular LEGO bricks, enabling a seamless transition for kids as they grow and develop their building skills.