This baby door frame is made of high-quality fabric. It has a high level of use, comfort, softness and durability. Even the smallest baby can stay upright. As the baby beats, the coordination ability gradually increases, providing fun and exercise for the baby. If your baby wants to be standing and bouncing,it gives baby complete freedom of movement and promotes easy, breathing. The scientifically designed saddle seat firmly supports babys spine, ensuring correct, upright posture during exercise.