“The rein is constructed in such a way that if the toddler falls one can pull up sharply and stop the fall. However, once both feet are off the ground, the head of the child being still the heavier part, it is necessary to continue to trust the rein to take all the weight if you are to prevent the head meeting the pavement! if the reins were fixed across the high back rather than at the waist there would not be this problem.”