The same principle applies to all car seats and means that your child cannot create extra space if there is no extra space to begin with. Some children have shown us that, with only a minimum of slack in the belt system, they can get a hand between the buckle and their stomach and then, by moving it towards their head, they can get an elbow under the belts – but this requires a very flexible shoulder. These children display a tremendous desire to free themselves from their car seat. Child safety in the car and freedom of movement are not compatible in principle. To transport a child not only safely but also comfortably, a slight amount of slack in the belt system is needed. If the belt is pulled extremely tightly and the child is sitting calmly in the car seat, experience has taught us that all car seats are the same when it comes to 'climbing out of the car seat'. We see a similar pattern in children ages 1-4 years in car seats of various types and from various manufacturers. The belt system is a closed system that keeps the child in the same position continuously - during normal car trips as well as during a sudden stop or accident. This system is closed by securing the child when tightening the belts. If this is done properly, the belts cannot be loosened during use (if this does happen, we ask that you contact our Service Department through the retailer where you bought the product).