Safe and high quality: use the principle of aerodynamics to drive the car forward, easy to play. The environmentally friendly materials are harmless and tasteless, and the main body is made of environmentally friendly ABS plastic material, allowing babies to play with peace of mind. The bottom non-slip pad is designed to be firm, not fragile, and durable. As shown in the picture, the surface of this set of toys is very smooth and will not harm the child's skin. The principle of aerodynamic reaction force, an enlightenment puzzle that can be played without using a battery to press and inflate it by hand.3. Two inflatable play methods, safe to prevent accidental swallowing, so that children no longer need to blow balloons in their mouths to avoid the risk of accidental swallowing.4. Educational toys: This is a set of pneumatic cars, suitable for children to conduct scientific experiments on pneumatic knowledge. It will increase children's interest in science and knowledge. Children will learn some science and physics while playing this racing car. Product list: 1x inflation tube; 2x trolley; 6x balloon. The height of the inflator is 22.5cm and the size of the trolley is 5.5x8.5cm.