The wheels have a unique friction mechanism that sends the toy speeding forward when your child pushes it slightly. This truck’s design is simple and straightforward. With perfect size for little hands, these push friction powered toys are easy to grip and play. It supports the development of cognitive abilities, kid’s hand-eye coordination, sensory perception, developing their imaginations and practice cooperative play. Through vivid images and educational use patterns, it promotes the development of children’s brains, stimulates children’s interest, and cultivates kid’s concentration