Most children's booster car seats used a sponge heightening pad, which is easy to deform and not durable. Moon+ is made of PU leather waterproof and dirt-proof fabric, high energy absorbing foaming body, and high strength steel frame structure. In addition, Moon+ applies the principle of human skin, muscle, and bone bionics, which contains the features of firmness, anti-collision performance and safety. The cushion is made of 8cm slow rebound material, which is more comfortable. The back of the chair is made of ABS / PC plastic alloy, which has more mechanical strength, toughness and flame retardancy to ensure the safety of the baby.