Based on the traditional cobblers last these shoe trees will keep your footwear in good shape and can be adjusted to stretch shoes that are pinching or chafing they use the natural flexibility of leather to lengthen and widen your shoes or you can relieve painful bunions corns etc by inserting the plastic pressure point shapers to stretch specific parts they also come with two blocks of genuine cedar wood which you can insert along with the trees to naturally deodorise and absorb moistur