4-in-1 design, allow baby to learn how to walk through the baby walker mode -Helps the baby walk more independently under the push-behind and push-car modes -Allows baby to play on the floor under the rolling toy car mode -Safety bumper and non-slip stair pads for safety -Seat cushion is comfortable for baby to sit on and convenient for you to wash with the removable design -3 adjustable heights for babies with different heights -It can be used by babies with different strengths through adjustab