My younger DS is sensitive to supermarket school trousers fabrique. Under his knees the skin becomes row (scabs) and he scratching it. We bought him two pairs of M&S skin kind but they have not lasted long. Now they do not sell these skinkind range in his size anymore. He is 6. On the internet there are trousers which cost more than £15.00. If they are to last for three months or so then it is a waste of money but if they will last for the whole year I will consider buying them. Thank you for any suggestions.