Popbo Vehicles - Sam Fire Engine - K"s Kids For ages 0+Popbo Blocs are soft plastic building blocks specifically designed for infants. They come in many vibrant colors and are compatible and connectable to one another. The series also consists of animals, vehicles, figurines and more. Popbo Blocs" unique linking system makes it easy for babies to pop the blocks on and off and is a great training tool for their motor skills, hand-eye coordination and creativity. Popbo Blocs is the best soft building blocks for the little ones